ASSOCIATED BANC-CORP
10-K405, 1998-03-20
STATE COMMERCIAL BANKS
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<PAGE>
 
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                      SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, DC 20549
 
                             ---------------------
 
                                   FORM 10-K
(Mark One)
 
[X]   ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIESEXCHANGE
      ACT OF 1934 For the fiscal year ended December 31, 1997
 
[_]   TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
      SECURITIESEXCHANGE ACT OF 1934 For the transition period
    to
 
                        COMMISSION FILE NUMBER: 0-5519
 
                             ASSOCIATED BANC-CORP
            (Exact name of registrant as specified in its charter)
 
               WISCONSIN                             39-1098068
    (State or other jurisdiction of               (I.R.S. employer
    incorporation or organization)               identification no.)
 
        112 NORTH ADAMS STREET,                         54301
         GREEN BAY, WISCONSIN                        (Zip code)
    (Address of principal executive
               offices)
 
      Registrant's telephone number, including area code: (920) 433-3166
 
          SECURITIES REGISTERED PURSUANT TO SECTION 12(b) OF THE ACT
                                     NONE
 
          SECURITIES REGISTERED PURSUANT TO SECTION 12(g) OF THE ACT
                   COMMON STOCK, PAR VALUE--$0.01 PER SHARE
                               (TITLE OF CLASS)
 
Indicate by check mark whether the Registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
Registrant was required to file such reports), and (2) has been subject to
such filing requirements for the past 90 days.
 
                                Yes  X  No
 
Indicate by check mark if disclosure of delinquent filers pursuant to Item 405
of Regulation S-K ((S)229.405 of this chapter) 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. [X]
 
As of March 2, 1998, 50,685,915 shares of Common Stock were outstanding and
the aggregate market value of the voting stock held by nonaffiliates of the
Registrant was $2,469,894,362. Excludes $124,717,627 of market value
representing the outstanding shares of the Registrant owned by all directors
and officers who individually, in certain cases, or collectively, may be
deemed affiliates. Includes $221,183,339 of market value representing 8.52% of
the outstanding shares of the Registrant held in a fiduciary capacity by the
trust departments of four wholly-owned subsidiaries of the Registrant.
 
                      DOCUMENTS INCORPORATED BY REFERENCE
 
                                            Part of Form 10-K Into Which
               Document                Portions of Documents are Incorporated
 
 Proxy Statement for Annual Meeting of                Part III
    Shareholders on April 22, 1998
 
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- -------------------------------------------------------------------------------
<PAGE>
 
                              ASSOCIATED BANC-CORP
                        1997 FORM 10-K TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                                                          PAGE
                                                                          ----
 <C>        <S>                                                           <C>
 PART I
 Item 1.    Business                                                        3
 Item 2.    Properties                                                      6
 Item 3.    Legal Proceedings                                               6
 Item 4.    Submission of Matters to a Vote of Security Holders             6
 PART II
 Item 5.    Market for Registrant's Common Equity and Related
            Stockholder Matters                                             8
 Item 6.    Selected Financial Data                                         9
 Item 7.    Management's Discussion and Analysis of Financial Condition
            and Results of Operations                                      10
 Item 8.    Financial Statements and Supplementary Data                    35
 Item 9.    Changes in and Disagreements With Accountants on Accounting
            and Financial Disclosure                                       69
 PART III
 Item 10.   Directors and Executive Officers of the Registrant             69
 Item 11.   Executive Compensation                                         69
 Item 12.   Security Ownership of Certain Beneficial Owners and
            Management                                                     69
 Item 13.   Certain Relationships and Related Transactions                 69
 PART IV
 Item 14.   Exhibits, Financial Statement Schedules and Reports on Form
            8-K                                                            70
 Signatures                                                                72
</TABLE>
 
                                       2
<PAGE>
 
SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS
 
Forward-looking statements have been made in this document, and in documents
that are incorporated by reference, that are subject to risks and
uncertainties. These forward-looking statements, which are included in
Management's Discussion and Analysis and in the Chairman's letter, describe
future plans or strategies and include the Corporation's expectations of
future results of operations. The words "believes," "expects," "anticipates"
or similar expressions identify forward-looking statements.
 
Shareholders should note that many factors, some of which are discussed
elsewhere in this document and in the documents that are incorporated by
reference, could affect the future financial results of the Corporation and
could cause those results to differ materially from those expressed in
forward-looking statements contained or incorporated by reference in this
document. These factors include the following:
 
  . operating, legal and regulatory risks;
 
  . economic, political and competitive forces affecting the Corporation's
    banking, securities, asset management and credit services businesses; and
 
  . the risk that the Corporation's analyses of these risks and forces could
    be incorrect and/or that the strategies developed to address them could
    be unsuccessful.
 
These factors should be considered in evaluating the forward-looking
statements, and undue reliance should not be placed on such statements.
 
                                    PART I
 
ITEM 1 BUSINESS
 
GENERAL
 
Associated Banc-Corp (the "Corporation") is a bank holding company registered
pursuant to the Bank Holding Company Act of 1956, as amended (the "Act"). It
was incorporated in Wisconsin in 1964 and was inactive until 1969 when
permission was received from the Board of Governors of the Federal Reserve
System to acquire three banks. The Corporation currently owns twelve
commercial banks and a federally chartered thrift located in Wisconsin and
Illinois (the "affiliates") serving their local communities and, measured by
total assets held at December 31, 1997, was the third largest commercial bank
holding company headquartered in Wisconsin. As of December 31, 1997, the
Corporation owned 34 nonbanking subsidiaries located in Arizona, California,
Delaware, Illinois, Missouri, Nevada, and Wisconsin.
 
The Corporation acquired Centra Financial, Inc., and its wholly owned
subsidiary, Central Bank of West Allis, and its wholly owned subsidiary,
Central Investments, Inc., on February 21, 1997. Further, the Corporation,
through a subsidiary, Badger Merger Corp., merged with First Financial
Corporation ("FFC") and its wholly owned subsidiary, First Financial Bank
("FFB"), and its wholly owned subsidiaries, Appraisal Services, Inc., First
Financial Card Services Bank, National Association, Wisconsin Insurance
Management, Inc., FFS Funding Corp., UFS Capital Corp., Illini Service
Corporation, Mortgage Finance Corporation, and First Financial Investments,
Inc. on October 29, 1997.
 
SERVICES
 
The Corporation provides advice and specialized services to its affiliates in
banking policy and operations, including auditing, data processing,
marketing/advertising, investing, legal/compliance, personnel services, trust
services, risk management, and other financial services functionally related
to banking.
 
Responsibility for the management of the affiliates remains with their
respective Boards of Directors and officers. Services rendered to the
affiliates by the Corporation are intended to assist the local management of
these affiliates to expand the scope of services offered by them. Bank and
thrift affiliates of the Corporation at December 31, 1997, provided services
through 226 locations in 150 communities.
 
The Corporation, through its affiliates, provides a complete range of banking
services to individuals and businesses. These services include checking,
savings, NOW, Super NOW, and money market deposit
 
                                       3
<PAGE>
 
accounts, business, personal, educational, residential, and commercial
mortgage loans, MasterCard, VISA and other consumer-oriented financial
services, including IRA and Keogh accounts, safe deposit and night depository
facilities. Automated Teller Machines (ATMs), which provide 24-hour banking
services to customers of the affiliates, are installed in many locations in
the affiliates' service areas. The affiliates are members of an interstate
shared ATM network, which allows their customers to perform banking
transactions from their checking, savings or credit card accounts at ATMs in a
multi-state environment. Among the services designed specifically to meet the
needs of businesses are various types of specialized financing, cash
management services and transfer/collection facilities.
 
The affiliates provide lending, depository, and related financial services to
commercial, industrial, financial, and governmental customers. Term loans,
revolving credit arrangements, letters of credit, inventory and accounts
receivable financing, real estate construction lending, and international
banking services are available.
 
Additional emphasis is given to noncredit services for commercial customers,
such as advice and assistance in the placement of securities, corporate cash
management, and financial planning. The affiliates make available check
clearing, safekeeping, loan participations, lines of credit, portfolio
analyses, data processing, and other services to approximately 150
correspondent financial institutions.
 
Four of the affiliates and a trust company subsidiary offer a wide variety of
fiduciary, investment management, advisory, and corporate agency services to
individuals, corporations, charitable trusts, foundations, and institutional
investors. They also administer (as trustee and in other fiduciary and
representative capacities) pension, profit sharing and other employee benefit
plans, and personal trusts and estates.
 
Investment subsidiaries provide discount and full-service brokerage services,
including the sale of fixed and variable annuities, mutual funds, and
securities, to the affiliates' customers and the general public. Insurance
brokerage subsidiaries provide commercial and individual insurance services,
including various life, property, casualty, credit, and mortgage products to
the affiliates' customers and the general public. Several investment
subsidiaries located in Nevada hold, manage, and trade cash, stocks, and
securities transferred from the affiliates and reinvest investment income. A
leasing subsidiary provides lease financing for a variety of capital equipment
for commerce and industry. An appraisal subsidiary provides real estate
appraisals for customers, government agencies, and the general public.
 
The mortgage banking subsidiaries are involved in the origination, servicing
and warehousing of mortgage loans, and the sale of such loans to investors.
The primary focus is on one- to four-family residential and multi-family
properties, all of which are generally salable into the secondary mortgage
market.
 
The Corporation and affiliates are not dependent upon a single or a few
customers, the loss of which would have a material adverse effect on the
Corporation. No material portion of the Corporation's or the affiliates'
business is seasonal.
 
FOREIGN OPERATIONS
 
The Corporation and its affiliates do not engage in any operations in foreign
countries.
 
EMPLOYEES
 
At December 31, 1997, the Corporation, its affiliates, and its subsidiaries,
as a group, had 3,679 full-time equivalent employees.
 
COMPETITION
 
Competition exists in all of the Corporation's principal markets. Competition
involves efforts to obtain new deposits, the scope and type of services
offered, interest rates paid on deposits and charged on loans, as well as
other aspects of banking. Substantial competition exists from other financial
institutions engaged in the business of making loans, accepting deposits, and
issuing credit cards. All of the affiliates also face direct competition from
members of bank holding company systems that have greater assets and resources
than those of the Corporation.
 
 
                                       4
<PAGE>
 
SUPERVISION AND REGULATION
 
Financial institutions are highly regulated both at the federal and state
level. Numerous statutes and regulations affect the business of the
Corporation and its affiliates.
 
The activities of the Corporation are regulated by the Act. The Act requires
prior approval of the Federal Reserve Board (the "Board") before acquiring
direct or indirect ownership or control of more than five percent of the
voting shares of any bank or bank holding company. The Riegel-Neal Interstate
Banking and Branching Efficiency Act of 1994 contains provisions which amended
the Act to allow an adequately-capitalized and adequately-managed bank holding
company to acquire a bank located in another state as of September 29, 1995.
Effective June 1, 1997, interstate branching was permitted. The Riegel-Neal
Amendments Act of 1997 clarifies the applicability of host state laws to any
branch in such state of an out-of-state bank.
 
The Act also prohibits, with certain exceptions, acquisitions of more than
five percent of the voting shares of any publicly traded company which is not
a bank and the conduct by a holding company (directly or through its
subsidiaries) of any business other than banking or performing services for
its subsidiaries without prior approval of the Board.
 
All of the affiliates are insured by the Federal Deposit Insurance Corporation
and are subject to the provisions of the Federal Deposit Insurance Act. Areas
subject to regulation by federal and state authorities include capital
adequacy, reserves, investments, loans, mergers, issuance of securities,
payments of dividends by the banking affiliates, establishment of branches,
and other aspects of banking operations.
 
The FDIC Board of Directors voted December 11, 1996 to finalize a rule
lowering the rates on assessments paid to the Savings Association Insurance
Fund ("SAIF"), effective as of October 1, 1996. As a result of the special
assessment required by the Deposit Insurance Funds Act of 1996 ("Funds Act"),
the SAIF was capitalized at the target Designated Reserve Ratio ("DRR") of
1.25% of estimated insured deposits on October 1, 1996. The Funds Act required
the FDIC to set assessments in order to maintain the target DRR. The Board
has, therefore, lowered the rates on assessments paid to the SAIF, while
simultaneously widening the spread between the lowest and highest rates to
improve the effectiveness of the FDIC's risk-based premium system. The Board
has also established a process, similar to that which was applied to the Bank
Insurance Fund ("BIF"), for adjusting the rate schedules for both the SAIF and
the BIF within a limited range, without notice and comment to maintain each of
the fund balances at the target DRR.
 
The Funds Act also separated, effective January 1, 1997, the Financing
Corporation ("FICO") assessment to service the interest on its bond
obligations from the SAIF assessment. The amount assessed on individual
institutions by the FICO will be in addition to the amount paid for deposit
insurance according to the FDIC's risk-related assessment rate schedules.
 
GOVERNMENT MONETARY POLICIES AND ECONOMIC CONTROLS
 
The earnings and growth of the banking industry and the banking affiliates of
the Corporation are affected by the credit policies of monetary authorities,
including the Federal Reserve System. An important function of the Federal
Reserve System is to regulate the national supply of bank credit in order to
combat recession and curb inflationary pressures. Among the instruments of
monetary policy used by the Federal Reserve to implement these objectives are
open market operations in U.S. government securities, changes in reserve
requirements against member bank deposits and changes in the Federal Reserve
discount rate. These means are used in varying combinations to influence
overall growth of bank loans, investments and deposits, and may also affect
interest rates charged on loans or paid for deposits. The monetary policies of
the Federal Reserve authorities have had a significant effect on the operating
results of commercial banks in the past and are expected to continue to have
such an effect in the future.
 
In view of changing conditions in the national economy and in the money
markets, as well as the effect of credit policies by monetary and fiscal
authorities, including the Federal Reserve System, no prediction can be made
as to possible future changes in interest rates, deposit levels and loan
demand, or their effect on the business and earnings of the Corporation and
its affiliates.
 
 
                                       5
<PAGE>
 
ITEM 2 PROPERTIES
 
The Corporation's headquarters are located in the City of Green Bay,
Wisconsin, in a leased facility with approximately 8,500 square feet of office
space owned by an affiliated company. The space is currently leased on a
month-to-month basis. The Corporation, as of December 31, 1997, was engaged in
negotiations to lease approximately 30,000 square feet of office space in
buildings yet to be constructed in the Village of Ashwaubenon to accommodate
the corporate staff and support functions. The Corporation expects to occupy
substantially all of the office space under construction in July 1998.
 
The affiliates, as of December 31, 1997, occupied 226 offices in 150 different
communities within Wisconsin and Illinois. All key facilities, except
Associated Bank Milwaukee and Associated Bank Chicago, are owned by the
affiliates. Except for the affiliate offices in downtown Milwaukee and
Chicago, which are located in the lobbies of multi-story office buildings, all
of the banking facilities are free-standing buildings that provide adequate
customer parking facilities, including drive-in facilities of various numbers
and types for customer convenience. Some banks also have offices in various
supermarket locations as well as offices located within retirement community
facilities. In addition, the Corporation owns other real property that, when
considered in the aggregate, is not material to its financial position.
 
ITEM 3 LEGAL PROCEEDINGS
 
There are legal proceedings pending against certain subsidiaries of the
Corporation in the ordinary course of their business. Although litigation is
subject to many uncertainties and the ultimate exposure with respect to these
matters cannot be ascertained, management believes, based upon discussions
with counsel, that the Corporation has meritorious defenses, and any ultimate
liability would not have a material adverse affect on the consolidated
financial position of the Corporation.
 
ITEM 4 SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS
 
During the fourth quarter of 1997, shareholders of Associated were asked to
consider an amendment to Associateds Articles of Incorporation to increase the
number of authorized shares of Associated common stock to 100,000,000 shares
and to issue up to 28,627,148 shares of common stock of Associated pursuant to
an Agreement and Plan of Merger, dated as of May 14, 1997, among Associated,
Badger Merger Corp., and FFC. At a Special Meeting of Shareholders held on
October 27, 1997, Associated shareholders approved the above matters.
 
EXECUTIVE OFFICERS OF THE CORPORATION
 
Pursuant to General Instruction G of Form 10-K, the following list is included
as an unnumbered item in Part I of this report in lieu of being included in
the Proxy Statement for the Annual Meeting of Stockholders to be held April
22, 1998.
 
 
                                       6
<PAGE>
 
The following is a list of names and ages of executive officers of the
Corporation and affiliates indicating all positions and offices held by each
such person and each such person's principal occupation(s) or employment
during the past five years. The Date of Election refers to the date the person
was first elected an officer of the Corporation or its affiliates. Officers
are appointed annually by the Board of Directors at the meeting of directors
immediately following the Annual Meeting of Shareholders. There are no family
relationships among these officers nor any arrangement or understanding
between any officer and any other person pursuant to which the officer was
selected. No person other than those listed below has been chosen to become an
Executive Officer of the Corporation.
 
<TABLE>
<CAPTION>
         NAME               OFFICES AND POSITIONS HELD         DATE OF ELECTION
 <C>                  <S>                                      <C>
 Harry B. Conlon      Chairman, President, Chief Executive      March 1, 1975
 Age: 62              Officer and Director of Associated
                      Banc-Corp
 Robert C. Gallagher  Vice Chairman of Associated Banc-Corp;    April 28, 1982
 Age: 59              Chairman and Chief Executive Officer
                      of Associated Bank Green Bay
                      (affiliate)
                      Prior to April 1996, Executive Vice
                      President and Director of Associated
                      Banc-Corp; Chairman, President and
                      Chief Executive Officer of Associated
                      Bank Green Bay (affiliate)
 John C. Seramur      Vice Chairman of Associated Banc-Corp;   October 27, 1997
 Age: 55              President and Chief Executive Officer
                      of First Financial Bank (affiliate)
                      Prior to October 1997, President and
                      Chief Executive Officer of First
                      Financial Corporation and President
                      and Chief Executive Officer of First
                      Financial Bank
 Brian R. Bodager     Chief Administrative Officer, General     July 22, 1992
 Age: 42              Counsel and Corporate Secretary of
                      Associated Banc-Corp
 Joseph B. Selner     Senior Vice President and Chief          January 25, 1978
 Age: 51              Financial Officer of Associated Banc-
                      Corp
 Arthur E. Olsen, III Vice President-General Auditor of         July 28, 1993
 Age: 46              Associated Banc-Corp
                      Prior to July 1993, Senior manager of
                      a national public accounting firm
 Mary Ann Bamber      Senior Vice President-Director of        January 22, 1997
 Age: 47              Retail Banking of Associated Banc-Corp
                      From January 1996 to January 1997,
                      Independent consultant
                      From January 1996 to January 1997,
                      Senior Officer of an Iowa-based bank
                      Prior to January 1996, Senior Officer
                      of a Minnesota-based holding company
 Robert J. Johnson    Vice President-Director of Human         January 22, 1997
 Age: 52              Resources of Associated Banc-Corp
                      Prior to January 1997, Officer of a
                      Wisconsin manufacturing company
 Donald E. Peters     Director of Systems and Operations of    October 27, 1997
 Age: 48              Associated Banc-Corp; Executive Vice
                      President of First Financial Bank
                      (affiliate)
                      Prior to October 1997, Executive Vice
                      President of First Financial Bank
                      (affiliate)
 John P. Evans        Chief Executive Officer and Director     August 16, 1993
 Age: 48              of Associated Bank North (affiliate)
                      Prior to July 1993, Officer of a
                      Wisconsin bank
 David J. Handy       President, Chief Executive Officer and     May 31, 1991
 Age: 58              Director of Associated Bank, National
                      Association (affiliate)
</TABLE>
 
 
                                       7
<PAGE>
 
<TABLE>
<CAPTION>
        NAME               OFFICES AND POSITIONS HELD         DATE OF ELECTION
 <C>                 <S>                                      <C>
 Michael B. Mahlik   Executive Vice President, Managing        January 1, 1991
 Age: 45             Trust Officer, and Director of
                     Associated Bank, National Association
                     (affiliate);
                     President, Chief Executive Officer,
                     and Director of Associated Trust
                     Company (subsidiary)
 George J. McCarthy  President, Chief Executive Officer,      November 11, 1983
 Age: 47             and Director of Associated Bank
                     Chicago (affiliate)
 Mark J. McMullen    Executive Vice President and Director      June 2, 1981
 Age: 49             of Associated Bank Green Bay
                     (affiliate)
 Randall J. Peterson President and Director of Associated      August 2, 1982
 Age: 52             Bank Green Bay (affiliate)
                     Prior to July 1996, Executive Vice
                     President and Director of Associated
                     Bank Green Bay (affiliate)
 Gary L. Schaefer    President and Director of Associated       March 1, 1995
 Age: 48             Bank Madison (affiliate)
                     Prior to March 1995, Senior Officer of
                     a Wisconsin bank
 Thomas R. Walsh     President, Chief Executive Officer,       January 1, 1994
 Age: 40             and Director of Associated Bank
                     Lakeshore (affiliate)
                     From September 1992 to January 1994,
                     Senior Officer of Associated Bank
                     Lakeshore (affiliate)
 Gordon J. Weber     President, Chief Executive Officer and   December 15, 1993
 Age: 50             Director of Associated Bank Milwaukee
                     (affiliate); Director of Associated
                     Bank Madison (affiliate)
                     Prior to December 15, 1993, President,
                     Chief Executive Officer and Director
                     of Associated Bank Lakeshore
                     (affiliate)
</TABLE>
 
                                    PART II
 
ITEM 5 MARKET FOR REGISTRANT'S COMMON EQUITY AND RELATED STOCKHOLDER MATTERS
 
Information in response to this item is incorporated by reference to the table
"Market Information" on Page 64 and the discussion of dividend restrictions in
Note 11 "Stockholders' Equity" of the Notes to Consolidated Financial
Statements included under Item 8 of this document. The Corporation's common
stock is currently being traded on The Nasdaq Stock Market under the symbol
ASBC.
 
The approximate number of equity security holders of record of common stock,
$.01 par value, as of March 1, 1998, was 10,480. Certain of the Corporation's
shares are held in "nominee" or "street" name and, accordingly, the number of
beneficial owners of such shares is not known nor included in the foregoing
number.
 
Payment of future dividends is within the discretion of the Corporation's
Board of Directors and will depend, among other factors, on earnings, capital
requirements, and the operating and financial condition of the Corporation. At
the present time, the Corporation expects that dividends will continue to be
paid in the future.
 
                                       8
<PAGE>
 
ITEM 6 SELECTED FINANCIAL DATA
 
TABLE 1: EARNINGS SUMMARY AND SELECTED FINANCIAL DATA(1)
 
<TABLE>
<CAPTION>
                                         %
                                       CHANGE                                                                5-YEAR
                                        1996                                                                COMPOUND
                                         TO                                                                  GROWTH
YEARS ENDED DECEMBER 31,     1997       1997      1996         1995        1994        1993        1992       RATE
- --------------------------------------------------------------------------------------------------------------------
<S>                       <C>          <C>     <C>          <C>         <C>         <C>         <C>         <C>
Interest income           $   787,244    7.7   $   731,197  $  696,858  $  613,725  $  586,567  $  562,885     6.9%
Interest expense              411,637    9.5       375,923     360,499     292,735     287,587     306,535     6.1
                          ---------------------------------------------------------------------------------------
Net interest income           375,607    5.7       355,274     336,359     320,990     298,980     256,350     7.9
Less: Provision for
possible loan losses           31,668  131.2        13,695      14,029       9,035      16,441      26,486     3.6
                          ---------------------------------------------------------------------------------------
 Net interest income
 after provision for
 possible loan losses         343,939     .7       341,579     322,330     311,955     282,539     229,864     8.4
                          ---------------------------------------------------------------------------------------
Plus: Noninterest income       95,976  (17.9)      116,845     104,989      84,155      95,713      87,096     2.0
Less: Noninterest
expense                       323,647   10.4       293,235     252,927     245,310     240,318     222,453     7.8
                          ---------------------------------------------------------------------------------------
 Net noninterest expense      227,671   29.1       176,390     147,938     161,155     144,605     135,357    11.0
                          ---------------------------------------------------------------------------------------
Income before income
taxes and extraordinary
item/cumulative effect
of an accounting change       116,268  (29.6)      165,189     174,392     150,800     137,934      94,507     4.2
Income tax expense             63,909   11.2        57,487      62,381      54,203      49,311      32,019    14.8
Extraordinary item                 --    N/M          (686)         --          --          --       1,006     N/M
Cumulative effect of an
accounting change                  --    N/M            --          --          --          --       6,600     N/M
                          ---------------------------------------------------------------------------------------
NET INCOME                $    52,359  (51.1)  $   107,016  $  112,011  $   96,597  $   88,623  $   70,094    (5.7)
                          =======================================================================================
Basic earnings per
share(2)
 Income before
 extraordinary
 item/cumulative effect
 of an accounting change  $      1.04  (51.1)  $      2.13  $     2.28  $     1.99  $     1.88  $     1.45    (6.4)%
 Net income               $      1.04  (50.8)  $      2.12  $     2.28  $     1.99  $     1.88  $     1.62    (8.5)
Diluted earnings per
share(2)
 Income before
 extraordinary
 item/cumulative effect
 of an accounting change  $      1.02  (51.0)  $      2.09  $     2.24  $     1.94  $     1.80  $     1.43    (6.4)
 Net income               $      1.02  (50.7)  $      2.08  $     2.24  $     1.94  $     1.80  $     1.60    (8.6)
Cash dividends per
share(2)                  $      1.11   16.8   $       .95  $      .81  $      .71  $      .62  $      .51    16.8
Weighted average shares
outstanding
 Basic                         50,307    (.5)       50,564      49,109      48,598      47,204      43,173     3.1
 Diluted                       51,148    (.7)       51,504      49,978      49,715      49,214      43,762     3.2
SELECTED FINANCIAL DATA
Year-End Balance:
Loans (including loans
held for sale)             $7,190,577    7.3   $ 6,700,847  $6,418,683  $5,995,964  $5,380,082  $4,576,015     9.5%
Allowance for possible
loan losses                    92,731   29.2        71,767      68,560      65,774      63,415      54,797    11.1
Investment securities       2,940,218    6.8     2,753,938   2,266,895   2,499,380   2,433,963   2,217,845     5.8
Assets                     10,691,439    5.6    10,123,383   9,393,609   9,130,522   8,448,468   7,486,104     7.4
Deposits                    8,364,137    5.1     7,959,298   7,570,201   7,334,240   7,063,481   6,239,654     6.0
Long-term borrowings           15,270  (54.2)       33,329      36,907      94,537     250,402     184,494   (39.2)
Stockholders' equity          813,693    1.3       803,562     725,211     626,591     560,722     475,546    11.3
Stockholders' equity per
share(2)                        16.15     .9         16.01       14.69       12.84       11.89       10.21     9.6
                          ---------------------------------------------------------------------------------------
Average for the Year:
Loans (including loans
held for sale)            $ 6,962,820    5.7   $ 6,586,639  $6,157,655  $5,636,601  $5,136,319  $4,307,117    10.1%
Investment securities       2,905,948   15.1     2,523,757   2,421,379   2,536,133   2,444,255   2,009,672     7.7
Assets                     10,395,615    7.8     9,643,657   9,123,981   8,737,231   8,228,145   7,159,118     7.7
Deposits                    8,122,011    4.4     7,778,257   7,409,409   7,191,053   6,927,867   6,173,058     5.6
Stockholders' equity          839,859    8.3       775,180     674,368     596,365     511,737     431,204    14.3
                          ---------------------------------------------------------------------------------------
Financial Ratios:
Return on average
equity(3)                       16.93%               16.64%      17.21%      16.20%      17.32%      16.26%
Return on average
assets(3)                        1.37                 1.34        1.27        1.11        1.08        0.98
Net interest margin
(tax-equivalent)                 3.85                 3.95        3.95        3.93        3.91        3.91
Average equity to
average assets                   8.08                 8.04        7.39        6.83        6.22        6.02
Dividend payout
ratio(3)(4)                     39.27                37.24       34.28       35.72       33.02       31.41
                          =======================================================================================
</TABLE>
 
(1) All financial data adjusted retroactively for certain acquisitions
    accounted for using the pooling-of-interests method.
(2) Per share data adjusted retroactively for stock splits and stock dividends.
(3) Ratio is based upon income prior to merger integration and other one-time
    charges, extraordinary items or cumulative effects of an accounting change.
(4) Ratio is based upon basic earnings per share.
N/M = not meaningful
 
                                       9
<PAGE>
 
ITEM 7 MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
       OF OPERATIONS
 
The following discussion is management's analysis of the consolidated
financial condition and results of operations of the Corporation, which may
not otherwise be apparent from the consolidated financial statements included
in this report. Reference should be made to the consolidated financial
statements and the selected financial data presented elsewhere in this report
for an understanding of the following discussion and analysis.
 
PERFORMANCE SUMMARY
 
The following management's discussion and analysis will focus upon "operating
earnings" of the Corporation for the past three years. To arrive at operating
earnings, reported results for these periods were adjusted by the following:
 
  . 1997 operating earnings exclude the merger, integration and other one-
    time charges recorded by the Corporation in conjunction with the merger
    of FFC of $103.7 million, or $89.8 million after-tax. This pre-tax charge
    includes a $35.3 million adjustment to securities for other than
    temporary impairment of value, $16.8 million of conforming provision for
    loan losses, and $51.6 million of merger, integration and other one-time
    charges. The $51.6 million of merger, integration and other one-time
    charges includes $12.6 million for employee and director severance and
    contract costs, $20.2 million for costs associated with elimination of
    duplicative facilities, computer systems, software and integration, and
    $11.2 million for investment banking, legal and accounting fees and $7.7
    million for other one-time charges. These charges reduced basic earnings
    per share by $1.79 and diluted earnings per share by $1.76.
 
  . 1996 operating earnings exclude a one-time pre-tax charge of $28.8
    million associated with the recapitalization of the Savings Association
    Insurance Fund and a one-time pre-tax charge of $4.2 million relating to
    a change in accounting for the amortization of goodwill and other
    intangible assets and an extraordinary after-tax charge of $686,000
    resulting from the costs associated with the early redemption of
    subordinated notes (all recorded at FFC). These charges, $22.7 million
    after-tax, reduced basic earnings per share by $0.44 and diluted earnings
    per share by $0.42.
 
  . 1995 operating earnings exclude a one-time pre-tax charge of $6.5 million
    relating to acquisition-related expenses incurred relative to the
    acquisition of FirstRock Bancorp, Inc. by FFC. The $6.5 million of
    merger, integration and other one-time charges include $3.8 million for
    employee and director severance and contract costs, $740,000 for costs
    associated with duplicative facilities, computer systems, software and
    integration, $1.0 million for investment banking, legal and accounting
    fees and $870,000 for other charges. These charges, $4.0 million after-
    tax, reduced basic earnings per share by $0.08 and diluted earnings per
    share by $0.08.
 
Performance ratios for these periods are also calculated excluding these
items.
 
The Corporation achieved record operating earnings in 1997. Operating net
income grew to $142.2 million, a 9.6% increase over the $129.7 million earned
in 1996. This follows an 11.7% increase over operating net income of $116.0
million in 1995.
 
Basic operating earnings per share increased to $2.83 per share in 1997
compared to $2.56 and $2.36 per share in 1996 and 1995, respectively. The
10.5% increase over 1996 basic operating earnings per share followed an 8.5%
increase in 1996 over 1995. On a diluted operating earnings per share basis,
the Corporation recorded $2.78 per share in 1997, compared to $2.52 and $2.32
per share in 1996 and 1995, respectively.
 
The presentation of basic and diluted earnings per share on the consolidated
statements of income is in accordance with the Corporation's adoption of
Statement of Financial Accounting Standards (SFAS) No. 128 "Earnings Per
Share." Under the provisions of SFAS No. 128, primary and fully diluted
earnings per share reporting were replaced with basic and diluted earnings per
share.
 
 
                                      10
<PAGE>
 
The improvement in the Corporation's 1997 operating net income was led by a
$20.6 million increase in fully-taxable equivalent ("FTE") net interest
income. Growth in earning assets of $762 million more than offset a 10 basis
point decline in the net interest margin. FTE interest income increased $56.3
million while interest expense increased $35.7 million.
 
Provision for loan losses (excluding the merger-related charges) increased to
$14.9 million compared to $13.7 million in 1996. The higher provision was in
response to higher volumes of loans in 1997. Net charge-offs decreased to
$11.4 million in 1997 compared to $14.0 million in 1996 as the Corporation
recorded lower levels of commercial and installment loans to individuals
charge-offs.
 
Noninterest income (excluding securities gains and losses) increased to $128.8
million in 1997 over the $127.5 million recorded in 1996. 1996 noninterest
income includes a $11.2 million gain on the sale of credit card loans recorded
by FFC. The Corporation recorded increases in trust service fees, service
charges on deposit accounts, mortgage banking income, loan fees and retail
commission income.
 
Noninterest expense (excluding merger, integration and other one-time charges)
increased 4.5%, or $11.8 million to $272.0 million in 1997. Increases in
salaries and employee benefits, business development and advertising, data
processing, and other expenses were offset by a decrease in FDIC premiums.
 
Return on average assets increased in 1997 to 1.37% compared to 1.34% in 1996.
Return on average equity increased to 16.93% in 1997 compared to 16.64% in
1996. The Corporation's efficiency ratio remained stable, increasing to 53.33%
in 1997 compared to 53.31% in 1996.
 
Cash dividends paid in 1997 increased by 16.8% to $1.11 per share over the
$.95 per share paid in 1996. This followed a 17.3% increase in 1996 dividends
per share over the $.81 per share paid in 1995.
 
All per share information has been restated to reflect the 6-for-5 stock split
declared January 22, 1997, effected in the form of a 20% stock dividend, paid
on March 17, 1997 to shareholders of record March 5, 1997.
 
BUSINESS COMBINATIONS
 
On October 29, 1997 the Corporation merged with FFC, parent company of the
$6.0 billion FFB. FFB has 128 locations throughout Wisconsin and Illinois. In
conjunction with this acquisition, the Corporation issued 27.8 million shares
of common stock. This transaction was accounted for as a pooling of interests.
All consolidated financial information was restated as if the transaction had
been effected as of the beginning of the earliest reporting period. FFC's
product mix is primarily retail, with a concentration of real-estate mortgage
products (both traditional mortgage products and home equity loans), credit
card and student loans funded primarily with retail interest-bearing deposits.
Throughout the management's discussion and analysis, the impact of combining
FFC's balance sheet with the more traditional commercial banking balance sheet
of the Corporation is presented and discussed.
 
On February 21, 1997, the Corporation completed its merger with Centra
Financial, Inc., whose principal subsidiary is the $76 million asset Central
Bank of West Allis. The number of shares issued totaled 414,365. The
transaction was accounted for as a pooling of interests. However, the
transaction was not material to prior years' reported operating results and,
accordingly, previously reported results were not restated. The bank was
subsequently renamed Associated Bank West Allis.
 
In April 1996, the Corporation completed the acquisition of Greater Columbia
Bancshares, Inc., parent company of the $211 million asset The First National
Bank of Portage. This acquisition was accounted for using the pooling-of-
interests method. All consolidated financial information was restated as if
the transaction had been effected as of the beginning of the earliest
reporting period. The bank was subsequently renamed Associated Bank Portage,
National Association.
 
The Corporation also completed two other acquisitions in 1996 that were
accounted for using the pooling-of-interests method. However, neither
transaction was material to prior years' reported operating results and,
accordingly, previously reported prior years' results were not restated. In
March 1996, the Corporation completed the acquisition of SBL Capital
Bancshares, Inc., parent company of the $68 million asset The
 
                                      11
<PAGE>
 
State Bank of Lodi. In July 1996, the Corporation completed the acquisition of
the $139 million asset F&M Bankshares of Reedsburg, Inc., parent company of
Farmers & Merchants Bank. The banks were renamed Associated Bank Lodi and
Associated Bank Reedsburg, respectively.
 
In August 1995, the Corporation acquired GN Bancorp, Inc., parent company of
the $130 million asset Gladstone-Norwood Trust & Savings Bank in northwest
Chicago in a stock for stock merger transaction. The GN Bancorp acquisition
was accounted for as a pooling of interests. All consolidated financial
information was restated as if the transaction had been effected as of the
beginning of the earliest reporting period. The bank was subsequently renamed
Associated Bank Gladstone-Norwood. Additionally on July 31, 1996, the
Corporation completed the cash acquisition of Mid-America National Bancorp
Inc., parent company of the $39 million Mid-America National Bank of Chicago.
Mid-America National Bank was subsequently merged into Associated Bank
Chicago. This transaction was accounted for as a purchase, and accordingly,
the consolidated financial statements include the results of operations since
the date of acquisition.
 
In July 1995, the Corporation completed the cash acquisition of Great Northern
Mortgage Company, subsequently renamed Associated Great Northern Mortgage
Company, a privately owned mortgage company in suburban Chicago. The mortgage
company acquisition provided approximately $535 million in mortgage servicing
as well as expanding the Corporation's mortgage loan capabilities in Chicago
and northeast Illinois. The acquisition was accounted for as a purchase, and
accordingly, the consolidated financial statements include the results of
operations since the date of acquisition.
 
In February 1995, FFC acquired FirstRock Bancorp, Inc. ("FirstRock") of
Rockford, Illinois in a stock-for-stock merger. Upon closing, FirstRock's
subsidiary, First Federal Savings Bank, FSB was merged into FFB with First
Federal's six offices operating as branch banking offices of FFB. FirstRock
was merged into FFC. The transaction was accounted for using the pooling-of-
interests method. All consolidated financial information was restated as if
the transaction had been effected as of the beginning of the earliest
reporting period.
 
PENDING COMBINATION
 
On February 17, 1998 the Corporation announced the signing of a definitive
agreement to acquire Citizens Bankshares, Inc. ("Citizens"), parent company of
the $164 million Citizens Bank, N.A., with four banking locations in Northeast
Wisconsin. The stock-for-stock merger transaction is contingent upon approval
of regulatory authorities and the shareholders of Citizens. The transaction,
expected to be completed in the second quarter of 1998, will be accounted for
using the pooling-of-interests method. However, the transaction is not
expected to be material to prior years' reported operating results and,
accordingly, previously reported results will not be restated.
 
NET INTEREST INCOME
 
Net interest income continues to be the largest component of the Corporation's
operating income (net interest income plus noninterest income), accounting for
74.1% of 1997 total operating income, compared to 75.3% and 76.2% in 1996 and
1995, respectively. Net interest income represents the difference between
interest earned on loans, securities and other earning assets, and the
interest expense associated with the deposits and borrowings that fund them.
Interest rate fluctuations together with changes in volume and types of
earning assets and interest-bearing liabilities combine to affect total net
interest income. The remainder of this analysis discusses net interest income
on an FTE basis in order to provide comparability among the types of interest
earned.
 
FTE net interest income reached $381.3 million in 1997, an increase of 5.7%
over the 1996 level of $360.6 million. This increase follows a $19.9 million,
or 5.8% increase in 1996 over the $340.8 million recorded in 1995. The net
interest margin, or FTE net interest income as a percent of total average
earning assets, decreased to 3.85% in 1997, down from 3.95% in 1996 and 1995.
Strong growth in earning assets more than offset the 10 basis point decline in
the net interest margin, creating the increase in net interest income in 1997.
The $19.9 million increase in 1996 over 1995 was a result of earning assets
increasing by $505 million while the net interest margin remained stable.
 
                                      12
<PAGE>
 
TABLE 2: AVERAGE BALANCES AND INTEREST RATES (INCOME AND RATES ON A TAX-
EQUIVALENT BASIS)
 
<TABLE>
<CAPTION>
                                                       YEARS ENDED DECEMBER 31,
<S>                      <C>          <C>      <C>     <C>         <C>      <C>     <C>         <C>      <C>
                         ------------------------------------------------------------------------------------
<CAPTION>
                                     1997                         1996                         1995
<S>                      <C>          <C>      <C>     <C>         <C>      <C>     <C>         <C>      <C>
                         ------------------------------------------------------------------------------------
<CAPTION>
                           AVERAGE             AVERAGE  AVERAGE             AVERAGE  AVERAGE             AVERAGE
                           BALANCE    INTEREST  RATE    BALANCE    INTEREST  RATE    BALANCE    INTEREST  RATE
<S>                      <C>          <C>      <C>     <C>         <C>      <C>     <C>         <C>      <C>
                         ------------------------------------------------------------------------------------
<CAPTION>
                                                            (IN THOUSANDS)
<S>                      <C>          <C>      <C>     <C>         <C>      <C>     <C>         <C>      <C>
ASSETS
Earning assets:
Loans, net of unearned
income(1)(2)(3)           $6,962,820  $592,984  8.52%  $6,586,639  $564,576  8.57%  $6,157,655  $535,168  8.69%
Investment securities:
 Taxable                   2,725,566   184,231  6.76    2,345,489   156,967  6.69    2,272,696   151,983  6.69
 Tax exempt(1)               180,382    13,925  7.72      178,268    13,322  7.47      148,683    11,114  7.47
Interest-bearing
deposits in other
financial institutions        14,428       779  5.40        5,188       437  8.42       11,413       596  5.22
Federal funds sold and
securities purchased
under agreements to
resell                        16,237       999  6.15       21,750     1,267  5.83       41,660     2,426  5.82
                         ------------------------------------------------------------------------------------
Total earning assets     $ 9,899,433  $792,918  8.01%  $9,137,334  $736,569  8.06%  $8,632,107  $701,287  8.12%
                         ------------------------------------------------------------------------------------
Allowance for possible
loan losses                  (73,748)                     (72,168)                     (68,180)
Cash and due from banks      229,994                      246,509                      235,445
Other assets                 339,936                      331,982                      324,609
                         ------------------------------------------------------------------------------------
Total Assets             $10,395,615                   $9,643,657                   $9,123,981
                         ====================================================================================
LIABILITIES AND
STOCKHOLDERS' EQUITY
Interest-bearing
liabilities:
 Savings deposits        $ 1,073,244  $ 24,396  2.27%  $1,121,531  $ 27,501  2.45%  $1,146,282  $ 30,723  2.68%
 NOW deposits                712,458    11,905  1.67      673,106    11,397  1.69      603,734    10,405  1.72
 Money market deposits       902,186    34,054  3.77      799,795    28,229  3.53      697,128    24,624  3.53
 Time deposits             4,692,333   267,088  5.69    4,486,355   253,788  5.66    4,296,466   237,331  5.52
Federal funds purchased
and securities sold
under agreements to
repurchase                   538,097    29,046  5.40      444,676    22,976  5.17      521,164    29,215  5.61
Other short-term
borrowings                   749,803    43,463  5.80      484,266    29,208  6.03      370,331    25,890  6.99
Long-term borrowings          26,929     1,685  6.26       44,799     2,824  6.30       32,445     2,311  7.12
                         ------------------------------------------------------------------------------------
Total interest-bearing
liabilities              $ 8,695,050  $411,637  4.73%  $8,054,528  $375,923  4.67%  $7,667,550  $360,499  4.70%
                         ------------------------------------------------------------------------------------
Demand deposits              741,790                      697,470                      665,799
Accrued expenses and
other liabilities            118,916                      116,479                      116,264
Stockholder's equity         839,859                      775,180                      674,368
                         ------------------------------------------------------------------------------------
Total liabilities and
stockholder's equity     $10,395,615                   $9,643,657                   $9,123,981
                         ====================================================================================
Net interest income and
rate spread(1)                        $381,281  3.28%              $360,646  3.39%              $340,788  3.42%
                         ====================================================================================
Net yield on earning
assets(1)                                       3.85%                        3.95%                        3.95%
                         ====================================================================================
</TABLE>
(1) The yield on tax exempt loans and securities is computed on a tax-
    equivalent basis using a tax rate of 35% for all periods presented and is
    net of the effects of certain disallowed interest deductions.
(2) Nonaccrual loans have been included in the average balances.
(3) Interest income includes net loan fees.
 
 
                                      13
<PAGE>
 
Total average loans outstanding grew from $6.6 billion to $7.0 billion in
1997, an increase of 5.7%. This followed the 7.0% growth from 1995 to 1996.
Investment securities increased to $2.9 billion in 1997, up from $2.5 billion
in 1996 and $2.4 billion in 1995. The composition of the Corporation's earning
assets has changed significantly in 1997 in conjunction with the merger with
FFC. A larger portion of earning assets is now comprised of taxable investment
securities. The yield on taxable investment securities in 1997 was 176 basis
points lower than the yield on loans. Historically, the Corporation had
approximately 21.3% of its earning assets in investment securities compared to
29.4% in 1997. The Corporation's funding mix was also significantly impacted
by the merger with FFC. In prior years, the Corporation depended heavily upon
net free funds (difference between earning assets and interest-bearing
liabilities) as a funding source. Historically, the Corporation has funded
approximately 18% of its earning asset base with interest free net free funds.
FFC relied heavily upon certificates of deposit and wholesale funds to fund
its earning asset base. In 1997, 12.2% of the Corporation's earning asset base
was funded by interest free net free funds. The combination of a higher mix of
lower yielding investment securities and lower levels of interest free net
free funds has caused the Corporation's net interest margin, as reported
historically, to decline by approximately 58 basis points.
 
In 1997 the Corporation's net interest margin decreased to 3.85%, compared to
3.95% in 1996 and 1995. The interest rate spread, or difference between the
yield on earning assets and the rate on interest-bearing liabilities,
decreased 11 basis points in 1997. The yield on earning assets decreased by 5
basis points while the rate on interest-bearing liabilities increased by 6
basis points. The contribution from net free funds increased by 1 basis point.
Combined, these factors decreased the net interest margin by 10 basis points
in 1997.
 
TABLE 3: RATE/VOLUME ANALYSIS(1)
 
<TABLE>
<CAPTION>
                           1997 COMPARED TO 1996         1996 COMPARED TO 1995
                         INCREASE (DECREASE) DUE TO    INCREASE (DECREASE) DUE TO
<S>                      <C>       <C>       <C>       <C>       <C>       <C>
                         ----------------------------------------------------------
<CAPTION>
                          VOLUME     RATE      NET      VOLUME     RATE      NET
<S>                      <C>       <C>       <C>       <C>       <C>       <C>
                         ----------------------------------------------------------
<CAPTION>
                                            (IN THOUSANDS)
<S>                      <C>       <C>       <C>       <C>       <C>       <C>
Interest income:
Loans, net of unearned
income(2)                $ 32,058  $ (3,650) $ 28,408  $ 36,855  $ (7,447) $ 29,408
Investment securities:
 Taxable                   25,676     1,588    27,264     4,871       113     4,984
 Tax-exempt(2)                159       444       603     2,211        (3)    2,208
Interest-bearing
deposits in other
financial institutions        547      (205)      342      (419)      260      (159)
Federal funds sold and
securities purchased
under agreements to
resell                       (337)       69      (268)   (1,159)      --     (1,159)
                                      ----------------------------------------------
Total earning assets(2)  $ 58,103  $ (1,754) $ 56,349  $ 42,359  $ (7,077) $ 35,282
                                      ----------------------------------------------
Interest expense:
 Savings deposits        $ (1,152) $ (1,953) $ (3,105) $   (652) $ (2,570) $ (3,222)
 NOW deposits                 659      (151)      508     1,178      (186)      992
 Money market deposits      3,777     2,048     5,825     3,623       (18)    3,605
Time deposits              11,754     1,546    13,300     8,361     8,096    16,457
Federal funds purchased
and securities sold
under agreements to
repurchase                  5,005     1,065     6,070    (4,069)   (2,170)   (6,239)
Other short-term
borrowings                 15,433    (1,178)   14,255     7,210    (3,892)    3,318
Long-term borrowings       (1,118)      (21)   (1,139)      802      (289)      513
                                      ----------------------------------------------
Total interest-bearing
liabilities              $ 34,358  $  1,356  $ 35,714  $ 16,453  $ (1,029) $ 15,424
                                      ----------------------------------------------
Net interest income(2)   $ 23,745  $ (3,110) $ 20,635  $ 25,906  $ (6,048) $ 19,858
                                      ----------------------------------------------
</TABLE>
(1) The change in interest due to both rate and volume has been allocated in
    proportion to the relationship to the dollar amounts of the change in
    each.
(2) The yield on tax-exempt loans and securities is computed on an FTE basis
    using a tax rate of 35% for all periods presented and is net of the
    effects of certain disallowed interest deductions.
 
                                      14
<PAGE>
 
The Corporation's reported increase in FTE net interest income in 1997 was
primarily driven by larger volumes of earning assets. Net of related funding
costs, this growth increased FTE net interest income by $23.7 million. This
increase was tempered by a negative impact from interest rates. FTE interest
income from earning assets declined $1.8 million due to the change in rates
while interest expense increased $1.3 million due to the change in rates
combining to decrease net interest income by $3.1 million. This negative
impact from change in interest rates combined with the growth in the balance
sheet caused FTE net interest income to increase by $20.6 million in 1997.
 
The FTE net interest income reported in 1996 increased by $19.9 million over
1995. This increase was also primarily driven by larger volumes of earning
assets. Higher volumes of earning assets, net of related funding costs
increased FTE net interest income by $25.9 million. This increase was offset
by a negative impact from the change in interest rates of $6.0 million.
 
The Corporation's total cost of funds increased by 6 basis points in 1997,
after decreasing by 3 basis points in 1996. This increase was attributable to
a higher dependence upon wholesale funding in 1997. Retail interest-bearing
deposits as a percent of total interest-bearing liabilities decreased to 84.9%
in 1997 from 87.9% in 1996 and 1995. The rate on total retail interest-bearing
deposits increased to 4.57% in 1997, up from 4.53% in 1996 and 4.49% in 1995.
The cost of total wholesale funds decreased slightly in 1997 to 5.64%, down
from 5.65% in 1996 and 6.21% in 1995. As funding shifted to a higher reliance
on wholesale funding in 1997, costing 107 basis points more, the Corporation's
total cost of funding increased by 6 basis points.
 
TABLE 4: INTEREST RATE SPREAD AND INTEREST MARGIN (ON A TAX-EQUIVALENT BASIS)
 
<TABLE>
<CAPTION>
                               1997 AVERAGE             1996 AVERAGE             1995 AVERAGE
<S>                      <C>        <C>     <C>   <C>        <C>     <C>   <C>        <C>     <C>
                         --------------------------------------------------------------------------
<CAPTION>
                                     % OF                     % OF                     % OF
                                    EARNING                  EARNING                  EARNING
                          BALANCE   ASSETS  RATE   BALANCE   ASSETS  RATE   BALANCE   ASSETS  RATE
<S>                      <C>        <C>     <C>   <C>        <C>     <C>   <C>        <C>     <C>
                         --------------------------------------------------------------------------
<CAPTION>
                                                       (IN THOUSANDS)
<S>                      <C>        <C>     <C>   <C>        <C>     <C>   <C>        <C>     <C>
Earning assets           $9,899,433 100.0%  8.01% $9,137,334 100.0%  8.06% $8,632,107 100.0%  8.12%
                         --------------------------------------------------------------------------
Financed by:
 Interest-bearing funds  $8,695,050  87.8%  4.73% $8,054,528  88.1%  4.67% $7,667,550  88.8%  4.70%
 Noninterest-bearing
 funds                    1,204,383  12.2%         1,082,806  11.9%           964,557  11.2%
                         --------------------------------------------------------------------------
Total funds sources      $9,899,433 100.0%  4.16% $9,137,334 100.0%  4.12% $8,632,107 100.0%  4.17%
                         --------------------------------------------------------------------------
                         --------------------------------------------------------------------------
Interest rate spread                        3.28%                    3.39%                    3.42%
Contribution from net
free funds                                   .57%                     .56%                     .53%
Net interest margin                         3.85%                    3.95%                    3.95%
                         --------------------------------------------------------------------------
                         --------------------------------------------------------------------------
Average prime rate*                         8.44%                    8.27%                    8.83%
Average fed funds rate*                     5.46%                    5.30%                    5.84%
Average spread                              298BP                    297BP                    299BP
                         --------------------------------------------------------------------------
                         --------------------------------------------------------------------------
</TABLE>
*Source: Federal Reserve Statistics
 
The Corporation continued to experience a narrowing of loan spreads in 1997.
The yield on total loans decreased by 5 basis points, after decreasing 12
basis points in 1996. Total loans represent 70.3% of total earning assets in
1997, down from 72.1% in 1996 and 71.3% in 1995. A change in the total yield
on the loan portfolio will have the largest impact on total net interest
income. A benchmark measurement of loan capacity is the loan to deposits
(including demand) ratio. This ratio increased to 85.7% in 1997, up from 84.7%
in 1996 and 83.1% in 1995. This indicates the capacity of the Corporation to
accelerate loan growth and replace lower yielding investments as they mature
without placing undue pressure upon retail deposit generation. The growth of
net free funds (the difference between earning assets and interest-bearing
liabilities, or the amount of funding that does not have a specific interest
cost associated with them), and the subsequent contribution from these funds,
increased in 1997. Net free funds balances grew at a rate of 11.2%, faster
than the 8.3% growth of earning assets. The higher percentage of funding
provided by net free funds coupled with the higher value placed on them (cost
of total interest-bearing liabilities) helped offset the decline in the
interest rate spread.
 
                                      15
<PAGE>
 
TABLE 5: SELECTED AVERAGE BALANCES
 
<TABLE>
<CAPTION>
                                        % OF TOTAL            % OF TOTAL % OF $
                               1997       ASSETS      1996      ASSETS   CHANGE
<S>                         <C>         <C>        <C>        <C>        <C>
                            --------------------------------------------------
<CAPTION>
                                              (IN THOUSANDS)
<S>                         <C>         <C>        <C>        <C>        <C>
ASSETS
Loans, net of unearned
income                      $ 6,962,820    67.0%   $6,586,639    68.3%     5.7%
Investment securities
 Taxable                      2,725,566    26.2     2,345,489    24.3     16.2
 Tax-exempt                     180,382     1.7       178,268     1.8      1.2
Interest-bearing deposits
in other financial
institutions                     14,428     0.1         5,188     0.1    178.1
Federal funds sold and
securities purchased under
agreements to resell             16,237     0.2        21,750     0.2    (25.3)
                            --------------------------------------------------
Total earning assets          9,899,433    95.2     9,137,334    94.7      8.3
Other assets                    496,181     4.8       506,323     5.3     (2.0)
                            --------------------------------------------------
Total assets                $10,395,615   100.0%   $9,643,657   100.0%     7.8%
                            --------------------------------------------------
                            --------------------------------------------------
LIABILITIES &
STOCKHOLDERS' EQUITY
Interest-bearing deposits   $ 7,380,221    71.0%   $7,080,787    73.4%     4.2%
Short-term borrowings         1,287,900    12.4       928,942     9.6     38.6
Long-term borrowings             26,929     0.2        44,799     0.5    (39.9)
                            --------------------------------------------------
Total interest-bearing
liabilities                   8,695,050    83.6     8,054,528    83.5      8.0
Demand deposits                 741,790     7.1       697,470     7.2      6.4
Accrued expenses and other
liabilities                     118,916     1.2       116,479     1.2      2.1
Stockholders' equity            839,859     8.1       775,180     8.1      8.3
                            --------------------------------------------------
Total liabilities and
stockholders' equity        $10,395,615   100.0%   $9,643,657   100.0%     7.8%
                            ==================================================
</TABLE>
 
As the largest component of operating income, improvements in the growth of
net interest income are important to the Corporation's earnings performance.
Growth in the Corporation's net interest income during the past three years
has been a result of the growth in the level of earning asset volumes. The
merger with FFC with its higher reliance on the growth of investment
securities, primarily mortgage-related, has increased the importance of
managing net interest income. The Corporation uses certain modeling and
analysis techniques to manage net interest income and the related interest
rate risk position (See Interest Rate Sensitivity and Market Risk). The
Corporation seeks to meet the needs of its customers, yet provide for
stability in net interest income in the event of significant interest rate
changes.
 
PROVISION FOR POSSIBLE LOAN LOSSES
 
The provision for possible loan losses in 1997 was $14.9 million, excluding
the $16.8 million additional provision to conform FFC with the policies,
practices and procedures of the Corporation, compared to $13.7 million in 1996
and $14.0 million in 1995. The increase in provision reflects the loan growth
recorded in 1997. Including the additional provision, the ratio of allowance
for possible loan losses to total loans increased to 1.31%, up from 1.08% at
December 31, 1996 and 1.12% at December 31, 1995. (See Allowance for Possible
Loan Losses for additional discussion.)
 
NONINTEREST INCOME
 
Total operating noninterest income, excluding gains or losses from security
transactions, increased $1.2 million or 1.0% compared to an increase of $24.0
million, or 23.2% in 1996 over 1995. Excluding an $11.2 million gain on sale
of credit cards recorded in 1996 by FFC, the increase in operating noninterest
income in 1997 would have been $12.4 million, or 10.7% compared to an increase
of $12.8 million, or 12.4% in 1996 over 1995. The addition of FFC has
broadened the Corporation's recurring sources of noninterest income beyond its
traditional trust service fees and service fees on deposit accounts. Mortgage
servicing revenue, fees on loans (primarily credit card fees) and retail
commission income now represent significant sources of revenue. Historically,
as the Corporation had continued to develop additional sources of noninterest
income, trust service fees and service charges on deposits had represented a
slowly declining portion of total noninterest income. As historically
reported, these two components had represented 64.4% of total noninterest
income in 1994 and 58.9% in 1996. With the addition of FFC, this percentage
has now dropped to 44.0%, with mortgage banking income, loan fees and retail
commission income now representing 44.7% in 1997.
 
 
                                      16
<PAGE>
 
Trust service fees increased to $28.8 million in 1997, up from $25.2 million
in 1996 and $22.2 million in 1995. This represents increases of 14.2% and
13.2% in 1997 and 1996, respectively. These large increases represent the
continued improvement in trust business volume and growth in assets under
management. Trust assets under management totaled $4.0 billion at December 31,
1997 compared with $3.5 billion at December 31, 1996.
 
Income from mortgage banking activity increased 7.7% in 1997, or $1.8 million.
This followed an increase of $5.8 million, or 32.2% in 1996. Mortgage banking
income is comprised mainly of fees related to servicing mortgage loans,
residential loan origination fees, underwriting fees, escrow waiver fees and
the gain or loss on sale of mortgage loans to the secondary market. Servicing
revenues increased by $384,000 in 1997 over 1996 to $13.7 million from $13.4
million. The increase in servicing revenue reflects the Corporation's larger
servicing portfolio, as serviced 1- to 4-family residential loans increased to
$5.0 billion at the end of 1997 compared to $4.8 billion and $4.4 billion at
the end of 1996 and 1995, respectively. Net gains on sales of mortgage loans
accounted for the majority of the remaining increase in 1997.
 
Loan fees increased $1.9 million, or 13.1% in 1997 after increasing $1.5
million, or 11.4% in 1996. Loan fees include late charges and service charges
on real estate loans held in the Corporation's portfolio, credit card,
consumer late charges, home equity line service charges, and late charges and
commitment fees on commercial loans. The largest component of this category is
credit card fees, accounting for $10.3 million of the total fees in 1997.
Credit card fees increased $1.6 million in 1997 compared to 1996.
 
Retail commission income increased $2.7 million, or 21.1% when compared to the
full year of 1996. Retail commission income includes commissions from
insurance product sales, equity brokerage product sales and the sale of
annuities.
 
TABLE 6: NONINTEREST INCOME
 
<TABLE>
<CAPTION>
                                                                  % CHANGE
                                                                 FROM PRIOR
                                     YEARS ENDED DECEMBER 31,       YEAR
<S>                                 <C>       <C>       <C>      <C>    <C>
                                    -----------------------------------------
<CAPTION>
                                      1997      1996      1995   1997   1996
                                    --------  --------  -------- -----  -----
                                          (IN THOUSANDS)
<S>                                 <C>       <C>       <C>      <C>    <C>
Trust service fees                  $ 28,764  $ 25,185  $ 22,243  14.2   13.2
Service charges on deposit
accounts                              27,909    26,004    23,861   7.3    9.0
Mortgage banking income               25,709    23,873    18,052   7.7   32.2
Loan fees                             16,407    14,505    13,023  13.1   11.4
Retail commission income              15,446    12,757    10,760  21.1   18.6
Asset sale gains, net                    852    12,520       428   N/M    N/M
Other                                 13,665    12,679    15,110   7.8  (16.1)
                                    -----------------------------------------
Total, excluding securities gains    128,752   127,523   103,477   1.0   23.2
Investment securities gains
(losses), net (operating)              2,514   (10,678)    1,512   N/M    N/M
Merger, integration and other one-
time charges                         (35,290)       --        --   N/M    N/M
                                    -----------------------------------------
 Total noninterest income           $ 95,976  $116,845  $104,989 (17.9)  11.3
                                    =========================================
</TABLE>
N/M -- not meaningful
 
Net asset sale gains represent the net gain or loss on the sale of assets such
as fixed assets, other real estate owned, leased equipment, real estate held
for investment, and loans not held for sale (credit card or student loans).
Net asset sale gains decreased by $11.7 million in 1997, compared to 1996. The
majority of this decrease is attributable to a gain on sale of credit card
loans of $11.2 million recognized by FFC in 1996.
 
Other miscellaneous income, from a variety of sources, increased $986,000, or
7.8% in 1997. This increase is primarily attributable to higher levels of
Electronic Funds Transfer (EFT) fees. Net EFT fees increased by $967,000 in
1997.
 
Investment securities gains of $2.5 million represent an increase of $13.2
million over 1996. This increase is primarily attributable to a $13.1 million
loss recognized by FFC on the sale of mortgage-related securities in 1996.
 
                                      17
<PAGE>
 
The merger, integration and other one-time charges consist of writedowns taken
to record other than temporary impairment of value of securities. Concurrent
with the consummation of the merger with FFC, the Corporation transferred all
nonagency mortgage-related securities and an agency security, with a combined
amortized cost of $251.9 million from securities held to maturity to
securities available for sale. These mortgage-related securities were
transferred to maintain the existing interest rate risk position and credit
risk policy of the Corporation.
 
Concurrent with the transfer, the Corporation recorded a $32.5 million pre-tax
charge to earnings relative to one agency security with an amortized cost of
$130.6 million. Management recorded this other than temporary impairment of
value in the fourth quarter of 1997. This security is highly complex,
comprised of multiple cash flows predominated by an inverse floater tied to
libor, for which stress tests indicate that the cash flows are volatile in
higher interest rate environments. The estimated fair value of this security
at the time of the other than temporary impairment charge was based on quoted
prices of instruments with similar characteristics and cash flow valuation
techniques.
 
Additionally, the Corporation recorded a $2.8 million pre-tax charge, on other
nonagency mortgage-related securities that were transferred to available for
sale, with an amortized cost of $18.9 million to reflect an other than
temporary impairment of value in the fourth quarter of 1997. These securities
were subsequently sold with no additional loss in January 1998.
 
NONINTEREST EXPENSE
 
Total operating noninterest expense, excluding merger, integration and other
one-time charges, increased $11.8 million, or 4.5% in 1997. This follows a
$13.8 million, or 5.6% increase in 1996 over 1995. All categories, with the
exception of FDIC insurance premiums, recorded increases in 1997.
 
Salaries and employee benefits increased $7.5 million or 5.9% compared to
1996. This followed a $10.3 million, or 8.9% increase in 1996 compared to
1995. This category continues to be the largest component of noninterest
expense, representing 49.1% of operating expenses in 1997 and 48.5% and 47.0%
in 1996 and 1995, respectively. The increase in 1997 was comprised of higher
salary expenses of $6.2 million and higher fringe benefit costs of $1.3
million. The increase in salary expense reflects base merit pay increases and
new positions added. The fringe benefit increase is attributable to FICA
taxes, 401k and profit sharing expenses. These fringe benefit increases were a
result of higher levels of base compensation and changes made to benefit
plans. Full-time equivalent (FTE) employees at December 31, 1997 totaled 3,679
compared to 3,666 at December 31, 1996. As the Corporation continues to expand
to take advantage of business opportunities and the related revenues,
management will continue to review its significant investment in salaries and
employee benefit expenses.
 
TABLE 7: NONINTEREST EXPENSE
<TABLE>
<CAPTION>
                                                                   % CHANGE
                                                                  FROM PRIOR
                                        YEARS ENDED DECEMBER 31,     YEAR
<S>                                    <C>      <C>      <C>      <C>    <C>
                                       ---------------------------------------
<CAPTION>
                                         1997     1996     1995   1997   1996
                                       -------- -------- -------- -----  -----
                                             (IN THOUSANDS)
<S>                                    <C>      <C>      <C>      <C>    <C>
Salaries and employee benefits         $133,656 $126,154 $115,837   5.9    8.9
Net occupancy expense                    20,297   19,563   19,159   3.8    2.1
Data processing expense                  16,900   15,905   15,068   6.3    5.6
Business development and advertising     15,936   14,754   11,120   8.0   32.7
Equipment rentals, depreciation, and
maintenance                              12,600   12,033   11,433   4.7    5.2
Stationery and supplies                   5,532    5,030    5,325  10.0   (5.5)
FDIC expense                              3,284    9,675   13,799 (66.1) (29.9)
Other                                    63,820   57,116   54,728  11.7    4.4
                                       ---------------------------------------
Total noninterest expense (operating)   272,025  260,230  246,469   4.5    5.6
Merger, integration and other one-
time charges                             51,622   33,005    6,458   N/M    N/M
                                       ---------------------------------------
 Total noninterest expense             $323,647 $293,235 $252,927  10.4   15.9
                                       =======================================
</TABLE>
N/M--not meaningful
 
 
                                      18
<PAGE>
 
Net occupancy, data processing, and equipment rentals, depreciation and
maintenance reflect the continued investment in the systems and operations
center. Increased depreciation, maintenance and utilities directly reflect the
investment made in the systems and operations center in 1996. Higher data
processing fees are due to the processing volumes in excess of the base
contract with the third party processor.
 
Business development and advertising includes all business development related
costs, which include public relations, travel, meals, club and association
dues, and auto costs, and all advertising and marketing costs, including
market research, direct mail, television, radio, newsprint and all other
promotions increased $1.2 million, or 8.0% in 1997. This followed a $3.6
million, or 32.7%, increase in 1996 over 1995.
 
FDIC expense represents the regular premiums paid to the FDIC. FFC
historically has paid a higher percentage for insurance premiums. FFC's FDIC
assessment was decreased to 6.4 cents per $100 of assessable deposits from the
rate of 23 cents per $100 which was in effect prior to September 30, 1996. The
Corporation's banking affiliates that existed prior to the FFC acquisition had
their premiums virtually eliminated in 1996, with the assessment rate lowered
to 1.2 cents per $100 of assessable deposits for 1997. Total FDIC premiums
paid decreased to $3.3 million in 1997, down from $9.7 million and $13.8
million in 1996 and 1995, respectively. The one-time charge related to the
recapitalization of the SAIF, paid by FFC in 1996, is not included in this
category. This charge of $28.8 million on a pre-tax basis is included in the
merger, integration and other one-time charges category.
 
Other noninterest expense increased by $6.7 million, or 11.7%, in 1997
compared to 1996. This increase is attributable to higher levels of mortgage
servicing rights amortization, increased consulting costs, higher
communication and courier costs. This increase follows a $2.4 million, or
4.4%, increase in 1996 over 1995.
 
Merger, integration and other one-time charges include the following amounts
for each applicable year:
 
  . 1997 charges include $51.6 million of pre-tax charges related to the
    merger with FFC. These charges include $12.6 million for employee and
    director severance and contract costs, $20.2 million for costs associated
    with elimination of duplicative facilities, computer systems, software
    and integration, $11.2 million for investment banking, legal and
    accounting fees and $7.7 million for other one-time charges.
 
  . 1996 charges include a one-time charge of $28.8 million associated with
    the recapitalization of the SAIF and a one-time charge of $4.2 million
    relating to a change in accounting for the amortization of goodwill and
    other intangible assets recorded at FFC.
 
  . 1995 charges include a one-time charge of $6.5 million relating to
    acquisition-related expenses incurred relative to the acquisition of
    FirstRock Bancorp, Inc. by FFC. These charges include $3.8 million for
    employee and director severance and contract costs, $740,000 for costs
    associated with duplicative facilities, computer systems, software and
    integration, $1.0 million for investment banking, legal and accounting
    fees and $870,000 for other charges.
 
INCOME TAXES
 
Income tax expense, excluding the applicable income tax effect on merger,
integration and other one-time charges, increased to $77.8 million in 1997
compared to $68.5 million and $64.9 million in 1996 and 1995, respectively.
The Corporation's effective tax rate (operating income tax expense divided by
operating income before taxes) was 35.4%, 34.6% and 35.9% in 1997, 1996 and
1995, respectively.
 
BALANCE SHEET ANALYSIS
 
LOANS
 
Total loans, including loans held for sale, increased by $489 million, or 7.3%
to $7.2 billion at the end of 1997. This follows a $282 million, or 4.4%
increase in 1996 compared to 1995. In 1997 increases were experienced in
commercial, financial and agricultural, real estate-construction and real
estate-mortgage loans, each up $146 million, $101 million and $260 million,
respectively. Included in the increase in real estate-mortgage loans is an
increase of $72 million in mortgage loans held for sale.
 
 
                                      19
<PAGE>
 
TABLE 8: LOAN COMPOSITION
 
<TABLE>
<CAPTION>
                                                         AS OF DECEMBER 31,
                        ------------------------------------------------------------------------------------
                              1997             1996             1995             1994             1993
                        ---------------- ---------------- ---------------- ---------------- ----------------
                                   % OF             % OF             % OF             % OF             % OF
                          AMOUNT   TOTAL   AMOUNT   TOTAL   AMOUNT   TOTAL   AMOUNT   TOTAL   AMOUNT   TOTAL
                        ---------- ----- ---------- ----- ---------- ----- ---------- ----- ---------- -----
                                                                  (IN THOUSANDS)
<S>                     <C>        <C>   <C>        <C>   <C>        <C>   <C>        <C>   <C>        <C>   <C>
Commercial, financial,
and agricultural        $  986,839   14% $  841,145   13% $  801,004   13% $  710,285   12% $  758,925   14%
Real estate--
construction               335,978    5     235,478    3     217,223    3     199,376    3     168,232    3
Real estate--mortgage    5,060,264   70   4,799,900   72   4,569,362   71   4,278,825   71   3,719,199   69
Installment loans to
individuals                793,424   11     813,875   12     821,351   13     801,302   14     728,582   14
Lease financing             14,072   --      10,449   --       9,743   --       6,176   --       5,144   --
                    --------------------------------------------------------------------------------------------
Total loans (including
loans held for sale)    $7,190,577  100% $6,700,847  100% $6,418,683  100% $5,995,964  100% $5,380,082  100%
                    --------------------------------------------------------------------------------------------
                    --------------------------------------------------------------------------------------------
</TABLE>
 
The acquisition of FFC had a major impact on the loan composition of the
Corporation. As previously reported prior to the 1997 pooling restatements, at
December 31, 1996 the Corporation's loan composition consisted of 57% real
estate-mortgage, 26% commercial, financial and agricultural, 9% installment
loans to individuals, 7% real estate-construction, and 1% leasing. At December
31, 1997 this mix has changed to 70% real estate-mortgage, 14% commercial,
financial and agricultural, 11% installment loans to individuals and 5% real
estate-construction. The mix of loans at December 31, 1997 reflects FFC's mix
of loans, primarily real estate-mortgage and installment loans to individuals,
as the merger brought together FFC's consumer banking franchise with the
Corporation's existing business banking and asset management expertise.
 
Real estate-mortgage loans totaled $5.1 billion at the end of 1997 and $4.8
billion at the end of 1996. Loans in this classification in 1997 include $3.8
billion of loans secured by 1- to 4-family residential properties. Residential
real estate loans consist of conventional home mortgages, home equity lines,
and second mortgages. Loans of this type are primarily made to borrowers in
Wisconsin and Illinois. Residential real estate loans generally limit the
maximum loan to 75%-80% of collateral value. Also included in the real estate-
mortgage classification are loans secured by nonfarm, nonresidential real
estate properties. Loans in this group totaled $966 million at December 31,
1997.
 
Real estate loans secured by nonresidential real estate involve borrower
characteristics similar to those discussed for commercial loans and real
estate-construction projects. Loans of this type are mainly for business and
industrial properties, multi-family properties, community purpose properties
and similar properties. Loans are primarily made to borrowers in Wisconsin and
Illinois. Credit risk is managed in a similar manner to commercial loans and
real estate construction by employing sound underwriting guidelines, lending
to borrowers in known markets and businesses, and formally reviewing the
borrower's financial soundness and relationship on an ongoing basis.
 
Commercial, financial, and agricultural loans totaled $1.0 billion at the end
of 1997, comprising 14% of total loans outstanding, up from 13% at the end of
1996. The commercial, financial and agricultural loan classification primarily
consists of commercial loans to middle market companies and small businesses.
Loans of this type are in a broad range of industries. Borrowers are primarily
concentrated in Wisconsin and Illinois.
 
The credit risk related to commercial loans is largely influenced by general
economic conditions and the resulting impact on a borrower's operations.
Within commercial, financial and agricultural classification at December 31,
1997, loans to finance agricultural production total $35.4 million or 0.5% of
total loans.
 
An active credit risk management process is used for commercial loans to
ensure that sound and consistent credit decisions are made. Credit risk is
controlled by detailed underwriting procedures, comprehensive loan
administration, and periodic review of borrower's outstanding loans and
commitments. Borrower relationships are formally reviewed on an ongoing basis.
Further analyses by customer, industry and geographic location are performed
to monitor trends, financial performance and concentrations.
 
 
                                      20
<PAGE>
 
The loan portfolio is widely diversified by types of borrowers, industry
groups and market areas. Significant loan concentrations are considered to
exist for a financial institution when there are amounts loaned to multiple
number of borrowers engaged in similar activities that would cause them to be
similarly impacted by economic or other conditions. At December 31, 1997, no
concentrations existed in the Corporation's portfolio in excess of 10% of
total loans, or $708 million.
 
Real estate construction loans totaled $336 million, or 5% of the total loan
portfolio at the end of 1997 compared to $235 million, or 3% at the end of
1996. Loans in this classification are primarily short-term interim loans that
provide financing for the acquisition or development of commercial real
estate, such as multi-family or other commercial development projects. These
interim loans are generally made with the intent that the borrower will
refinance the loan with an outside third party or sell the project upon
completion.
 
Real estate construction loans are made to developers and project managers who
are well known to the Corporation, have prior successful project experience
and are well capitalized. Projects undertaken by these developers are
carefully reviewed by the Corporation to ensure that they are economically
viable. Loans of this type are primarily made in markets in Wisconsin and
Illinois in which the Corporation has a thorough knowledge of the local market
economy.
 
The credit risk associated with real estate construction loans is generally
confined to specific geographic areas. The Corporation controls the credit
risk on these types of loans by making loans in familiar markets to
developers, underwriting the loans to meet the requirements of institutional
investors in the secondary market, reviewing the merits of individual
projects, controlling loan structure, and monitoring project progress and
construction advances.
 
TABLE 9: LOAN MATURITY DISTRIBUTION AND INTEREST RATE SENSITIVITY(1)
 
<TABLE>
<CAPTION>
DECEMBER 31, 1997                        MATURITY(2)
- -----------------            ---------------------------------------
                              WITHIN     1-5      AFTER
                              1 YEAR    YEARS    5 YEARS    TOTAL
                             --------  --------  -------  ----------
                                        (IN THOUSANDS)
<S>                          <C>       <C>       <C>      <C>
Commercial, financial, and
agricultural                 $670,252  $287,163  $29,424  $  986,839
Real estate-construction      208,415   119,941    7,622     335,978
                                           --------------------------
Total                        $878,667  $407,104  $37,046  $1,322,817
                                           --------------------------
                                           --------------------------
Fixed rate                   $256,654  $359,825  $35,569  $  652,048
Floating or adjustable rate   622,013    47,279    1,477     670,769
                                           --------------------------
Total                        $878,667  $407,104  $37,046  $1,322,817
                                           --------------------------
                                           --------------------------
Percent                            66%       31%       3%        100%
</TABLE>
(1) Based upon scheduled principal repayments.
(2) Demand loans, past due loans, and overdrafts are reported in the "Within 1
    Year" category.
 
Installment loans to individuals totaled $793 million, down $20 million, or
2.5% compared to 1996. This followed a $7 million, or 0.9% decrease in 1996
from year-end 1995. 1996 was impacted by a sale of a $47.9 million credit card
affinity group portfolio. Installment loans include short-term installment
loans, direct and indirect automobile loans, recreational vehicle loans,
credit card loans, student loans and other personal loans. Individual
borrowers may be required to provide related collateral or a satisfactory
endorsement or guaranty from another person, depending on the specific type of
loan and the creditworthiness of the borrower. Loans are made to individual
borrowers located primarily in Wisconsin and Illinois. Credit risk for these
types of loans is generally greatly influenced by general economic conditions,
the characteristics of individual borrowers and the nature of the loan
collateral. Credit risk is primarily controlled by reviewing the
creditworthiness of the borrowers as well as taking appropriate collateral and
guaranty positions on such loans.
 
Factors that are critical to managing overall credit quality are sound loan
underwriting and administration, systematic monitoring of existing loans and
commitments, effective loan review on an ongoing basis, an adequate allowance
for possible loan losses, and sound nonaccrual and charge-off policies.
 
 
                                      21
<PAGE>
 
ALLOWANCE FOR POSSIBLE LOAN LOSSES
 
As of December 31, 1997, the allowance for possible loan losses of $92.7
million represented 1.31% of total loans outstanding, compared to $71.8
million, or 1.08% at December 31, 1996. The majority of this increase is
attributable to a one-time charge of $16.8 million related to the acquisition
of FFC to conform its allowance for possible loan losses to the policies,
practices and procedures of the Corporation.
 
TABLE 10: LOAN LOSS EXPERIENCE
 
<TABLE>
<CAPTION>
                                         YEARS ENDED DECEMBER 31,
                          ----------------------------------------------------------
                             1997        1996        1995        1994        1993
                          ----------  ----------  ----------  ----------  ----------
                                              (IN THOUSANDS)
<S>                       <C>         <C>         <C>         <C>         <C>
Average loans
outstanding               $6,962,820  $6,586,639  $6,157,655  $5,636,601  $5,136,319
Balance of allowance for
possible loan losses at
beginning of period       $   71,767  $   68,560  $   65,774  $   63,415  $   56,011
                          ==========================================================
Loans charged-off:
 Commercial, financial,
 and agricultural              1,327       2,916       3,356       2,593       4,520
 Real estate--
 construction                    600         193         191          89         131
 Real estate--mortgage         3,222       2,813       3,099       4,224       6,070
 Installment loans to
 individuals                   9,900      11,693       9,221       9,038       7,950
 Lease financing                  --           1           5          18          50
                          ----------------------------------------------------------
 Total loans charged-off      15,049      17,616      15,872      15,962      18,721
Recoveries of loans
previously charged-off:
 Commercial, financial,
 and agricultural                513       1,255       1,856       3,086       2,193
 Real estate--
 construction                     --           3          70          --         173
 Real estate--mortgage         1,312         837         931       1,151         695
 Installment loans to
 individuals                   1,792       1,514       1,764       1,676       1,718
 Lease financing                  --           8           8           7          20
                          ----------------------------------------------------------
 Total recoveries              3,617       3,617       4,629       5,920       4,799
                          ----------------------------------------------------------
Net loans charged-off         11,432      13,999      11,243      10,042      13,922
Balance related to
acquisitions                     728       3,511          --       3,366       4,885
Additions to the
allowance charged to
operating expense             31,668      13,695      14,029       9,035      16,441
                          ----------------------------------------------------------
Balance at end of period  $   92,731  $   71,767  $   68,560  $   65,774  $   63,415
                          ==========================================================
Ratio of net charge-offs
to average loans
outstanding                      .16%        .21%        .18%        .18%        .27%
Ratio of allowance for
possible loan losses to
total loans at end of
period                          1.31%       1.08%       1.12%       1.16%       1.20%
                          ==========================================================
</TABLE>
 
The provision for possible loan losses, excluding the one-time charge of $16.8
million, increased to $14.9 million, up from $13.7 million in 1996 and $14.0
million in 1995. Total net charge-offs in 1997 were $11.4 million, compared to
$14.0 million in 1996 and $11.2 million in 1995. Net charge-offs to average
loans was .16% in 1997, .21% in 1996 and .18% in 1995. Reflecting the changes
in the Corporation's loan portfolio mix, described earlier, the Corporation's
updated five-year goals include maintaining net charge-offs to average loans
below .30%. Each of the last five years' results have been within this revised
future goal.
 
Loans charged-off are subject to continuous review and specific efforts are
taken to achieve maximum recovery of principal, accrued interest, and related
expenses.
 
 
                                      22
<PAGE>
 
Management regularly reviews the adequacy of the allowance for possible loan
losses to ensure that the allowance is sufficient to absorb potential losses
arising from the credit granting process. Factors considered include the
levels of nonperforming loans, other real estate, past due trends, growth in
the loan portfolio, changes in the composition of the loan portfolio,
historical net charge-offs, the present and potential financial condition of
borrowers, general economic conditions, specific industry conditions and other
regulatory or legal issues that could affect the Corporation's loss potential.
 
The Corporation believes that the allowance for possible loan losses at
December 31, 1997, is adequate to absorb potential loan losses as evidenced by
its charge-off experience and allowance coverage of nonperforming loans
(discussed below). Active asset quality administration ensures appropriate
management of credit risk and minimization of loan losses.
 
TABLE 11: ALLOCATION OF THE ALLOWANCE FOR POSSIBLE LOAN LOSSES
 
<TABLE>
<CAPTION>
                                                  AS OF DECEMBER 31,
                                        ---------------------------------------
                                         1997    1996    1995    1994    1993
                                        ------- ------- ------- ------- -------
                                                    (IN THOUSANDS)
<S>                                     <C>     <C>     <C>     <C>     <C>
Commercial, financial and agricultural  $33,682 $27,943 $22,753 $21,279 $19,194
Real estate--construction                 2,016   1,047     929   1,133   1,440
Real estate--mortgage                    30,360  19,116  22,331  23,254  25,304
Installment loans to individuals         16,870  16,239  14,848  14,896  14,142
Lease financing                             493     530     460     331     136
Unallocated                               9,310   6,892   7,239   4,881   3,199
                                        ---------------------------------------
 Total                                  $92,731 $71,767 $68,560 $65,774 $63,415
                                        =======================================
</TABLE>
 
The allocation of the Corporation's allowance for possible loan losses for the
last five years is shown in Table 11. Management has developed methodologies
designed to assess the adequacy of the allowance for possible loan losses. The
allocation methodology applied by the Corporation focuses on changes in the
size and character of the loan portfolio, changes in levels of impaired and
other nonperforming and past due loans, the risk inherent in specific loans,
concentrations of loans to specific borrowers or industries, existing and
prospective economic conditions and historical losses on each portfolio
category. The indirect risk in the form of off-balance sheet unfunded
commitments is also taken into consideration. Management continues to target
and maintain the allowance for possible loan losses equal to the allocated
requirement plus an unallocated portion, as deemed necessary. Management
believes this is appropriate in light of current and expected economic
conditions and trends, the geographic and industry mix of the loan portfolio
and other risk related matters.
 
NONPERFORMING LOANS, POTENTIAL PROBLEM LOANS, AND OTHER REAL ESTATE
 
Management is committed to an aggressive nonaccrual and problem loan
identification philosophy. This philosophy is embodied through the monitoring
and reviewing of credit policies and procedures to ensure that all problem
loans are identified quickly and the risk of loss is minimized.
 
Nonperforming loans are considered a leading indicator of future loan losses.
Nonperforming loans are defined as nonaccrual loans, loans 90 days or more
past due but still accruing, and restructured loans. The Corporation
specifically excludes student loan balances that are 90 days or more past due
and still accruing and that have contractual government guarantees as to
collection of principal and interest, from its definition of nonperforming
loans.
 
Loans are normally placed on nonaccrual status when contractually past due 90
days or more as to interest or principal payments. Additionally, whenever
management becomes aware of facts or circumstances that may adversely impact
on the collectibility of principal or interest on loans, it is management's
practice to place such loans on nonaccrual status immediately, rather than
delaying such action until the loans become 90 days past due. Previously
accrued and uncollected interest on such loans is reversed, amortization of
related loan fees is suspended, and income is recorded only to the extent that
interest payments are subsequently received in cash and a determination has
been made that the principal
 
                                      23
<PAGE>
 
balance of the loan is collectible. If collectibility of the principal is in
doubt, payments received are applied to loan principal.
 
Loans past due 90 days or more but still accruing interest, with the exception
of approximately $8 million of guaranteed student loans at December 31, 1997,
are also included in nonperforming loans. Loans past due 90 days or more but
still accruing are classified as such where the underlying loans are both well
secured (the collateral value is sufficient to cover principal and accrued
interest) and in the process of collection. Also included in nonperforming
loans are "restructured" loans. Restructured loans involve the granting of
some concession to the borrower involving the modification of terms of the
loan, such as changes in payment schedule or interest rate.
 
TABLE 12: NONPERFORMING LOANS AND OTHER REAL ESTATE OWNED
 
<TABLE>
<CAPTION>
                                                DECEMBER 31,
                                   -------------------------------------------
                                    1997     1996     1995     1994     1993
                                   -------  -------  -------  -------  -------
                                               (IN THOUSANDS)
<S>                                <C>      <C>      <C>      <C>      <C>
Nonaccrual loans                   $32,415  $32,287  $28,787  $28,025  $34,580
Accruing loans past due 90 days
or more                              1,324    1,801    1,320    1,484    2,469
Restructured loans                     558      534    1,704    1,888    1,992
                                   -------------------------------------------
Total nonperforming loans          $34,297  $34,622  $31,811  $31,397  $39,041
                                   ===========================================
Ratio of nonperforming loans to
total loans at period end              .48%     .52%     .50%     .53%     .73%
Ratio of the allowance for
possible loans losses to
nonperforming loans at period end   270.38%  207.29%  215.52%  209.49%  162.43%
                                   -------------------------------------------
Other real estate owned            $ 2,067  $ 1,939  $ 4,852  $ 6,172  $10,262
                                   ===========================================
</TABLE>
 
Nonperforming loans at December 31, 1997 were $34.3 million, a decrease of
$325,000 from December 31, 1996. The ratio of nonperforming loans to total
loans at the end of 1997 was .48%, an improvement from .52% at December 31,
1996 and .50% at December 31, 1995. The Corporation's allowance for possible
loan losses to nonperforming loans was 270% at year-end 1997. This increased
from 207% and 216% at year-end's 1996 and 1995, respectively. The increase in
coverage of nonperforming loans is attributable to the $16.8 million one-time
charge related to the merger with FFC to conform the level of the allowance
for possible loan losses to the policies, practices and procedures of the
Corporation.
 
The following table shows, for those loans accounted for on a nonaccrual basis
and restructured loans for the years ended as indicated, the gross interest
that would have been recorded if the loans had been current in accordance with
their original terms and the amount of interest income that was included in
interest income for the period.
 
TABLE 13: FOREGONE LOAN INTEREST
 
<TABLE>
<CAPTION>
                           YEARS ENDED DECEMBER 31,
                          ----------------------------
                            1997      1996      1995
                          --------  --------  --------
                                (IN THOUSANDS)
<S>                       <C>       <C>       <C>
Interest income in
accordance with original
terms                     $  2,332  $  2,764  $  2,905
Interest income
recognized                  (1,215)   (1,086)   (1,110)
                          ----------------------------
Reduction in interest
income                    $  1,117  $  1,678  $  1,795
                          ============================
</TABLE>
 
Potential problem loans are loans where there are doubts as to the ability of
the borrower to comply with present repayment terms. The decision of
management to place loans in this category does not necessarily indicate that
the Corporation expects losses to occur, but that management recognizes that a
higher degree of risk is associated with these performing loans.
 
 
                                      24
<PAGE>
 
At December 31, 1997, potential problem loans totaled $74.0 million. The loans
that have been reported as potential problem loans are not concentrated in a
particular industry, but rather cover a diverse range of businesses, e.g.
communications, wholesale trade, manufacturing, finance/insurance/real estate,
and services. Management does not presently expect significant losses from
credits in the potential problem loan category.
 
Other real estate owned was $2.1 million at December 31, 1997 compared to $1.9
million at the end of 1996. Management actively seeks to ensure properties
held are administered to minimize the Corporation's risk of loss.
 
INVESTMENT SECURITIES PORTFOLIO
 
The investment securities portfolio is intended to provide the Corporation
with adequate liquidity, flexibility in asset/liability management and a
source of stable income. Investment securities, at amortized cost, including
those held to maturity and available for sale, totaled $2.9 billion at
December 31, 1997 compared to $2.8 billion at the end of 1996.
 
TABLE 14: INVESTMENT SECURITIES PORTFOLIO
 
<TABLE>
<CAPTION>
                                               YEARS ENDED DECEMBER 31,
                                           --------------------------------
                                              1997       1996       1995
                                           ---------- ---------- ----------
                                                    (IN THOUSANDS)
<S>                                        <C>        <C>        <C>
Investment Securities Held to Maturity:
U.S. Treasury securities                   $      498 $    4,204 $   10,036
Federal agency securities                     146,259    143,927    184,158
Mortgage-related securities                   361,298    673,990    791,341
Obligations of states and political
subdivisions                                  183,286    195,860    170,971
Other securities (debt)                        81,183     61,768     60,621
                                           --------------------------------
Total Amortized Cost                       $  772,524 $1,079,749 $1,217,127
                                           ================================
Total Fair Market Value                    $  782,240 $1,074,412 $1,209,820
                                           ================================
Investment Securities Available for Sale:
U.S. Treasury securities                   $  109,200 $  149,314 $  174,360
Federal agency securities                     324,708    326,049    220,801
Mortgage-related securities                 1,536,134  1,057,992    585,300
Obligations of state and political
subdivisions                                   14,312         --         --
Other securities (debt and equity)            142,081    127,787     68,679
                                           --------------------------------
Total Amortized Cost                       $2,126,435 $1,661,142 $1,049,140
                                           ================================
Total Fair Market Value                    $2,167,694 $1,674,189 $1,049,768
                                           ================================
</TABLE>
 
The merger with FFC had a major impact on the Corporation's total investment
portfolio. The relationship of investments to total earning assets was altered
as a result of the acquisition. As reported historically, at the end of 1996,
the Corporation's average investment portfolio comprised 21.3% of total
average earning assets. Subsequent to the merger with FFC, average investments
to total average earning assets equaled 29.4% in 1997. The composition of the
investment portfolio was altered as well. As previously reported, at the end
of 1996 Treasury and Federal Agency securities totaled 55.9%, mortgage-related
securities totaled 9.9%, municipal securities totaled 23.1%, and other debt
and equity securities totaled 11.1% of the total investment portfolio, at
amortized cost. At December 31, 1997, the mix changed to 65.5% mortgage-
related securities, 20.0% treasury and federal agency securities, 6.8%
municipal securities and 7.7% other debt and equity securities.
 
Mortgage-related securities are subject to inherent risks based upon the
future performance of the underlying collateral (i.e. mortgage loans) for
these securities. Among these risks are prepayment risk and interest rate
risk. Should general interest rate levels decline, the mortgage-related
securities portfolio would be subject to 1) prepayments as borrowers typically
would seek to obtain financing at lower rates, 2) a decline in interest income
received on adjustable-rate issuances, and 3) an increase in the fair value of
 
                                      25
<PAGE>
 
fixed rate issuances. Conversely, should general interest rate levels
increase, the mortgage-related securities portfolio would be subject to 1) a
longer term to maturity as borrowers would be less likely to prepay their
loans, 2) an increase in interest income received on adjustable rate
issuances, 3) a decline in the fair value of fixed rate issuances, and 4) a
decline in fair value of adjustable rate issuances to an extent dependent upon
the level of interest rate increases, the time period to the next interest
rate repricing date for the individual security and the applicable periodic
(annual and/or lifetime) cap which could limit the degree to which the
individual security could reprice within a given time period.
 
The mortgage-related security portfolio includes both U.S. Government agency
issuances and nonagency issuances. Unlike U.S. Government agency issued
mortgage-related securities which include a guarantee of principal and
interest payments on the underlying collateral, nonagency securities are
generally structured with a senior ownership position and subordinate
ownership position(s) providing credit support for the senior position. The
structure of nonagency mortgage-related securities may expose the Corporation
to credit risk in addition to interest rate risk and prepayment risk as
discussed above. Management monitors the major factors affecting the
performance of nonagency mortgage-related securities including, 1)
delinquencies, foreclosures, repossessions and recoveries relative to the
underlying mortgage loans collateralizing each security, 2) the level of
available subordination or other credit enhancements, 3) the competence of the
servicer of the underlying mortgage portfolio, and 4) the rating assigned to
each security by independent national rating agencies.
 
Concurrent with the consummation of the merger with FFC, the Corporation
transferred all nonagency mortgage-related securities and an agency security,
with a combined amortized cost of $251.9 million from securities held to
maturity to securities available for sale. These mortgage-related securities
were transferred to maintain the existing interest rate risk position and
credit risk policy of the Corporation.
 
Concurrent with the transfer, the Corporation recorded a $32.5 million pre-tax
charge to earnings relative to one agency security with an amortized cost of
$130.6 million. Management recorded this other than temporary impairment of
value in the fourth quarter of 1997. This security is highly complex,
comprised of multiple cash flows predominated by an inverse floater tied to
LIBOR, for which stress tests indicate that the cash flows are volatile in
higher interest rate environments. The estimated fair value of this security
at the time of the other than temporary impairment charge was based on quoted
prices of instruments with similar characteristics and cash flow valuation
techniques.
 
Additionally, the Corporation recorded a $2.8 million pre-tax charge on other
nonagency mortgage-related securities that were transferred to available for
sale, with an amortized cost of $18.9 million, to reflect an other than
temporary impairment of value in the fourth quarter of 1997. These securities
were subsequently sold with no additional loss in January 1998.
 
In November 1997, the Corporation hedged certain agency issued zero-coupon
bonds held by FFC, with a carrying value of $37.2 million and a market value
of $41.6 million, by executing various interest rate futures contracts. These
contracts had a notional value of $70.5 million and a maturity date of March
1998. Subsequently, in January 1998, the futures contracts were closed and the
zero-coupon bonds were sold. A net gain of $5.1 million will be recognized, in
investment securities gains, in the first quarter of 1998 from these
transactions.
 
Taxable securities were 93.2% of total securities at the end of 1997 compared
to 92.9% at the end of 1996. The aggregate market value of the securities
portfolio was approximately $2.95 billion compared to an amortized cost of
$2.90 billion at December 31, 1997.
 
At December 31, 1997, the Corporations securities portfolio did not contain
securities, other than U.S. Treasury and federal agencies, of any single
issuer that were payable from and secured by the same source of revenue or
taxing authority where the aggregate book value of such securities exceeded
10% of stockholders' equity or $81.4 million.
 
                                      26
<PAGE>
 
TABLE 15: INVESTMENT SECURITIES PORTFOLIO MATURITY DISTRIBUTION(1)
DECEMBER 31, 1997
 
<TABLE>
<CAPTION>
                         INVESTMENT SECURITIES HELD TO MATURITY--MATURITY DISTRIBUTION AND WEIGHTED AVERAGE YIELD
             -------------------------------------------------------------------------------------------------------------
                                    AFTER ONE      AFTER FIVE                      MORTGAGE-
                      WITHIN        BUT WITHIN     BUT WITHIN        AFTER          RELATED
                     ONE YEAR       FIVE YEARS      TEN YEARS      TEN YEARS       SECURITIES          TOTAL            TOTAL
             -------------------------------------------------------------------------------------------------------------
                   AMOUNT  YIELD   AMOUNT  YIELD  AMOUNT  YIELD  AMOUNT  YIELD    AMOUNT   YIELD    AMOUNT   YIELD  FAIR VALUE
             -------------------------------------------------------------------------------------------------------------
                                                             ($ IN THOUSANDS)
<S>               <C>      <C>    <C>      <C>    <C>     <C>    <C>     <C>    <C>        <C>    <C>        <C>    <C>        <C>
U.S. Treasury
Securities        $    498 6.10%  $     --   --   $    --    --  $    --   --   $       --   --   $      498 6.10%  $      500
Federal agency
securities          55,502 5.39%    77,258 6.25%   13,499 6.97%       --   --           --   --      146,259 5.99%     146,818
Obligations of
states and
political
subdivisions        24,110 7.40%    92,965 7.51%   65,700 7.19%      511 7.35%          --   --      183,286 7.38%     186,300
Mortgage-related
securities              --   --         --   --        --    --       --   --      361,298 7.21%     361,298 7.21%     365,952
Other securities
(debt)               9,852 6.20%    56,708 6.89%   14,623 6.76%       --   --           --   --       81,183 6.78%      82,670
             -------------------------------------------------------------------------------------------------------------
Total Amortized
Cost              $ 89,962 6.02%  $226,931 6.93%  $93,822 7.09%  $   511 7.35%  $  361,298 7.21%  $  772,524 6.97%  $  782,240
             -------------------------------------------------------------------------------------------------------------
             -------------------------------------------------------------------------------------------------------------
Total Fair Value  $ 89,990        $230,130        $95,636        $   532        $  365,952                          $  782,240
             -------------------------------------------------------------------------------------------------------------
             -------------------------------------------------------------------------------------------------------------
<CAPTION>
                        INVESTMENT SECURITIES AVAILABLE FOR SALE--MATURITY DISTRIBUTION AND WEIGHTED AVERAGE YIELD
             -------------------------------------------------------------------------------------------------------------
                                    AFTER ONE      AFTER FIVE                      MORTGAGE-
                      WITHIN        BUT WITHIN     BUT WITHIN        AFTER          RELATED
                     ONE YEAR       FIVE YEARS      TEN YEARS      TEN YEARS       SECURITIES          TOTAL            TOTAL
             -------------------------------------------------------------------------------------------------------------
                   AMOUNT  YIELD   AMOUNT  YIELD  AMOUNT  YIELD  AMOUNT  YIELD    AMOUNT   YIELD    AMOUNT   YIELD  FAIR VALUE
             -------------------------------------------------------------------------------------------------------------
                                                             ($ IN THOUSANDS)
<S>               <C>      <C>    <C>      <C>    <C>     <C>    <C>     <C>    <C>        <C>    <C>        <C>    <C>        <C>
U.S. Treasury
securities        $ 41,019 5.95%  $ 68,181 6.14%  $    --    --  $    --   --   $       --   --   $  109,200 6.07%  $  109,841
Federal agency
securities          70,197 5.85%   213,669 6.19%    8,188  6.75%  32,654 7.20%          --   --      324,708 6.23%     330,542
Obligations of
states and
political
subdivisions           200 8.63%     2,179 8.25%   11,564  6.94%     369 9.28%          --   --       14,312 7.22%      14,136
Mortgage-related
securities              --   --         --   --        --    --       --   --    1,536,134 6.55%   1,536,134 6.55%   1,557,603
Other securities
(debt and
equity)            137,712 5.58%     3,894 6.72%      475  6.82%      --   --           --   --      142,081 5.61%     155,572
             -------------------------------------------------------------------------------------------------------------
Total Amortized
Cost              $249,128 6.34%  $287,923 6.48%  $20,227  6.97% $33,023 6.19%  $1,536,134 6.55%  $2,126,435 6.42%  $2,167,694
             -------------------------------------------------------------------------------------------------------------
             -------------------------------------------------------------------------------------------------------------
Total Fair Value  $262,597        $289,219        $20,169        $38,106        $1,557,603                          $2,167,694
             -------------------------------------------------------------------------------------------------------------
             -------------------------------------------------------------------------------------------------------------
</TABLE>
(1) Expected maturities will differ from contractual maturities, as borrowers
    may have the right to call or repay obligations with or without call or
    prepayment penalties.
(2) Yields on tax-exempt securities are computed on a tax-equivalent basis
    using a tax rate of 35% and have not been adjusted for certain disallowed
    interest deductions.
 
                                      27
<PAGE>
 
DEPOSITS
 
Average total deposits in 1997 were $8.1 billion, an increase of 4.4% or $344
million over 1996. Included in this growth is $59.7 million of increase in the
balance of purchased brokered CDs. For the full year of 1997, the average
balance of brokered CDs in total deposits was $139.7 million, which is
included in time deposits in the table shown below. Adjusted for brokered CDs,
internal deposit growth in 1997 was 3.7%.
 
TABLE 16: AVERAGE DEPOSITS DISTRIBUTION
 
<TABLE>
<CAPTION>
                                         YEARS ENDED DECEMBER 31,
                                     --------------------------------
                                        1997       1996       1995
                                     ---------- ---------- ----------
                                              (IN THOUSANDS)
<S>                                  <C>        <C>        <C>
Noninterest-bearing demand deposits  $  741,790 $  697,470 $  665,799
Interest-bearing demand deposits        712,458    673,106    603,734
Savings deposits                      1,073,244  1,121,531  1,146,282
Money market deposits                   902,186    799,795    697,128
Time deposits                         4,692,333  4,486,355  4,296,466
                                     --------------------------------
Total deposits                       $8,122,011 $7,778,257 $7,409,409
                                     ================================
</TABLE>
 
Year-end 1997 noninterest-bearing deposits were $905 million compared to $804
million at the end of 1996. These amounts are substantially above the
respective yearly average balance amounts. Demand deposits normally show a
sizable increase as businesses, public entities and correspondent banks adjust
their cash positions at year-end. Average noninterest-bearing demand deposits
as a percentage of total average deposits increased to 9.1% in 1997 compared
to 9.0% for both 1996 and 1995.
 
TABLE 17: AVERAGE RATES PAID ON DEPOSITS
<TABLE>
<CAPTION>
                                   YEARS ENDED DECEMBER 31,
                                  ----------------------------
                                    1997      1996      1995
                                  --------  --------  --------
<S>                               <C>       <C>       <C>
Interest-bearing demand deposits      1.67%     1.69%     1.72%
Savings deposits                      2.27      2.45      2.68
Money market deposits                 3.77      3.53      3.53
Time deposits                         5.69      5.66      5.52
                                  --------  --------  --------
Total interest-bearing deposits       4.57%     4.53%     4.49%
                                  ========  ========  ========
</TABLE>
 
The total average interest-bearing demand, savings, and money market deposits
increased to $2.69 billion for 1997 from $2.59 billion in 1996. These deposits
as a percentage of total average deposits have remained relatively stable over
the past three years at 33.1% in 1997, 33.4% in 1996 and 33.0% in 1995.
 
TABLE 18: MATURITY DISTRIBUTION--CERTIFICATES OF DEPOSIT AND OTHER TIME
         DEPOSITS OF $100,000 OR MORE
 
<TABLE>
<CAPTION>
                                           DECEMBER 31, 1997
                                       --------------------------
                                       CERTIFICATES     OTHER
                                        OF DEPOSIT  TIME DEPOSITS
                                       ------------ -------------
                                             (IN THOUSANDS)
<S>                                    <C>          <C>
Three months or less                     $326,911      $56,858
Over three months through six months      146,204       13,695
Over six months through twelve months     133,903           --
Over twelve months                        102,283           --
                                       --------------------
Total                                    $709,301      $70,553
                                       ====================
</TABLE>
 
The Corporation continues to experience strong competition for deposits in its
markets. This is true for both the business and retail segments of the market.
During 1997, the Corporation's affiliates offered a number of different
products with specific features and competitive pricing. The deposit products
are designed to retain core deposit accounts, attract new customers, and
create opportunities for providing other bank services or relationships.
 
                                      28
<PAGE>
 
SHORT-TERM BORROWINGS
 
Short-term borrowings consist of federal funds purchased, securities sold
under repurchase agreements, Federal Home Loan Bank notes, notes payable to
banks, commercial paper, treasury tax and loan notes, collateralized mortgage
obligations and industrial revenue bonds. Average total short-term borrowings
were $1.29 billion compared with $929 million in 1996.
 
TABLE 19: SHORT-TERM BORROWINGS
 
<TABLE>
<CAPTION>
                                                      DECEMBER 31,
                                            ----------------------------------
                                               1997        1996        1995
                                            ----------  ----------  ----------
                                                     (IN THOUSANDS)
<S>                                         <C>         <C>         <C>
Federal funds purchased and securities
sold under agreements to repurchase         $  712,250  $  666,030  $  451,197
Federal Home Loan Bank                         525,317     451,380     335,644
Notes payable to banks                          87,139      68,937      66,647
Subordinated notes                                  --          --      54,925
Commercial paper                                 1,250       2,172       2,326
Current maturities of long-term borrowings          --       3,067         800
Other borrowed funds                            11,052       9,807       7,852
                                                -------------------------------
Total                                       $1,337,008  $1,201,393  $  919,391
                                                -------------------------------
                                                -------------------------------
Average amounts outstanding during year     $1,287,900  $  928,942  $  891,495
Average interest rates on amounts
outstanding during year                           5.63%       5.62%       6.18%
Maximum month-end amounts outstanding       $1,405,233  $1,201,393  $1,071,284
Average interest rates on amounts
outstanding at end of year                        5.75%       5.82%       5.89%
</TABLE>
 
The change in short-term borrowings outstanding is attributable to larger
amounts of overnight federal funds purchased and Federal Home Loan Bank notes
with a remaining maturity less than 1 year as subsidiary banks continue to
supplement the funding of asset growth with wholesale funds. The notes payable
to banks and commercial paper are primarily used to fund residential,
commercial, and leasing lending activities at the Corporation's residential
mortgage, commercial mortgage, and leasing subsidiaries.
 
LIQUIDITY
 
Liquidity refers to the ability of the Corporation to generate adequate
amounts of cash to meet the Corporation's needs for cash. The affiliates and
the parent company of the Corporation have different liquidity considerations.
 
Affiliates meet their cash flow requirements by having funds available to
satisfy customer credit needs as well as having available funds to satisfy
deposit withdrawal requests. Liquidity at banking subsidiaries is derived from
deposit growth, money market investments, maturing loans, the maturity of
investment securities held to maturity, the maturity or sale of investment
securities available for sale, access to other funding sources and markets,
and a strong capital position.
 
Deposit growth is the primary source of liquidity at the banking subsidiaries.
Total period-end deposits increased $405 million from 1996 to 1997. The
Corporation's overall deposit base grew an average of $344 million, or 4.4%
during 1997. Deposit growth, especially in the core deposit base, is the most
stable source of liquidity of a bank.
 
Another substantial source of liquidity is the Corporation's maturing
investment securities portfolio, particularly securities maturing within one
year. At December 31, 1997, excluding mortgage-related securities, the
amortized cost of securities, both securities held to maturity and securities
available for sale, maturing within one year amounted to $339 million. At the
end of 1997, the securities portfolio contained $434 million at amortized cost
of U.S. Treasury and federal agency securities available for sale. These
government securities are highly marketable and had a market value of $440
million or 101.5% of amortized cost at year-end.
 
                                      29
<PAGE>
 
The loan portfolio is also a source of additional liquidity. The Corporation
has $906 million of commercial loans and real estate-construction loans
maturing within one year and a steady flow of repayments in the mortgage and
installment loan portfolios. Additionally, the Corporation has $3.8 billion of
loans secured 1- to 4-family residential property that could possibly be
securitized.
 
Within the classification of short-term borrowings at year-end 1997, federal
funds purchased and securities sold under agreements to repurchase totaled
$712 million compared to $666 million at the end of 1996. Federal funds are
purchased from a sizable network of correspondent banks while securities sold
under agreements to repurchase are obtained from a base of individual,
business and public entity customers.
 
The aggregate subsidiary liquidity resources were sufficient in 1997 to fund
the growth in loans and the investment securities portfolio, and to meet other
needs for cash when necessary. As of December 31, 1997, there were no material
commitments for capital expenditures, i.e. to purchase fixed assets.
 
Deposit growth will continue to be the primary source of bank subsidiary
liquidity on a long-term basis, along with stable earnings, the resulting cash
generated by operating activities and strong capital positions. Shorter-term
liquidity needs will mainly be derived from growth in short-term borrowings,
maturing money market investments and investment portfolio securities, loan
maturities and access to other funding sources.
 
Liquidity is also necessary at the parent company level. The parent company's
primary sources of funds are dividends and service fees from subsidiaries,
borrowings and proceeds from issuance of equity. The parent company manages
its liquidity position to provide the funds necessary to pay dividends to
stockholders, service debt, invest in subsidiaries and satisfy other operating
requirements. Dividends received from subsidiaries totaled $63.4 million in
1997 and will continue to be the parent's main source of long-term liquidity.
The dividends from subsidiaries, along with a $17.3 million increase in net
short-term borrowed funds, were sufficient to pay cash dividends to the
Corporation's common stockholders of $49.3 million in 1997 and fund increased
lending activities of nonbanking subsidiaries of $16.3 million.
 
At December 31, 1997, $131.0 million in dividends could be paid to the parent
by affiliates without obtaining prior regulatory approval, subject to the
capital needs of the banks. Additionally, the parent company had $120 million
of established lines of credit with nonaffiliated banks, of which $87.1
million was in use. Of the amount in use, the parent company downstreamed the
majority to the Corporation's residential and commercial mortgage banking
subsidiaries and leasing company for their use in funding loans and leases.
The parent company also has access to funds from the issuance of the
Corporation's commercial paper, although such funds are also downstreamed to
the nonbanking subsidiaries. Commercial paper outstanding at December 31,
1997, totaled $1.3 million.
 
The Corporation's long-term debt-to-equity ratio at December 31, 1997 was 1.9%
compared to 4.1% at December 31, 1996. The decrease is attributable to the
change in current maturities of long-term borrowings between years.
 
Management believes that, in the current economic environment, the
Corporation's subsidiary and parent company liquidity positions are adequate.
There are no known trends nor any known demands, commitments, events or
uncertainties that will result or are reasonably likely to result in a
material increase or decrease in the Corporation's liquidity.
 
INTEREST RATE SENSITIVITY AND MARKET RISK
 
Interest rate risk is the exposure to a bank's earnings and capital arising
from changes in future interest rates. All banks assume interest rate risk as
an integral part of normal banking operations. The management of interest rate
risk includes four components: policy statements, risk limits, risk
measurement and reporting procedures.
 
An important responsibility of the Asset/Liability Committee (ALCO) of each
subsidiary bank is the management of risks associated with changing interest
rates, changing asset and liability mixes, and their impact on earnings. These
ALCO's, in turn, operate under the advisory policy guidelines on interest rate
sensitivity set by the Corporation's ALCO. The sensitivity of net interest
income to market rate changes is evaluated regularly by the Corporation to
determine the effectiveness of interest rate risk management.
 
                                      30
<PAGE>
 
Table 20 reflects the Corporations expected cash flows and applicable yields
on earning assets and interest-bearing liabilities and the resulting current
fair market value after discounting expected cash flows at existing market
rates.
 
TABLE 20: MARKET RISK ANALYSIS INTEREST RATE RISK
 
<TABLE>
<CAPTION>
                                           EXPECTED PERIOD OF MATURITY
                  -----------------------------------------------------------------------------
                     WITHIN          1-2          2-3         3-4         4-5     GREATER THAN
                     1 YEAR         YEARS        YEARS       YEARS       YEARS       5 YEARS        TOTAL
<S>               <C>    <C>    <C>    <C>    <C>  <C>    <C>  <C>    <C>  <C>    <C>    <C>    <C>     <C>    <C>
                  ----------------------------------------------------------------------------------------------------
<CAPTION>
                                                                                                                FAIR
                         YIELD/        YIELD/      YIELD/      YIELD/      YIELD/        YIELD/         YIELD/ MARKET
                   BAL    RATE   BAL    RATE  BAL   RATE  BAL   RATE  BAL   RATE   BAL    RATE    BAL    RATE   VALUE
<S>               <C>    <C>    <C>    <C>    <C>  <C>    <C>  <C>    <C>  <C>    <C>    <C>    <C>     <C>    <C>
                  ----------------------------------------------------------------------------------------------------
<CAPTION>
                                                            ($ IN MILLIONS)
<S>               <C>    <C>    <C>    <C>    <C>  <C>    <C>  <C>    <C>  <C>    <C>    <C>    <C>     <C>    <C>
Short-term
investments (V)   $   16  5.36% $   --     -- $ --    --  $ --    --  $ --    --  $   --    --  $    16  5.36% $    16
Loans held for
sale (V)             114  7.44%     --     --   --    --    --    --    --    --      --    --      114  7.44%     114
Treasury,
Agency, Other
Securities (F)       284  5.70%    113  6.20%   80 6.36%   103 6.35%   102 6.65%      73 6.95%      755  6.18%     778
Treasury,
Agency, Other
Securities (V)        13  4.38%     --     --    3 5.11%     1 7.75%    31 5.51%       1 7.58%       49  5.26%      49
Mortgage-related
securities (F)         2  6.16%      3  6.78%    2 6.10%    60 6.93%    42 6.77%     356 7.13%      465  7.06%     471
Mortgage-related
securities (V)        --     --     --     --   --    --    --    --    --    --   1,433 6.59%    1,433  6.59%   1,452
Municipal
securities (F)        23  7.21%     24  7.61%   18 7.75%    26 7.61%    26 7.20%      81 7.23%      198  7.37%     200
Residential real
estate
loans (F)            491  8.03%    341  8.07%  264 8.08%   156 7.95%   115 7.89%     234 7.98%    1,601  8.02%   1,614
Residential real
estate
loans (V)            745  8.56%    283  7.40%  240 7.55%   127 7.51%   102 7.53%     275 7.53%    1,772  7.94%   1,791
Commercial loans
(F)                  594  8.86%    266  8.57%  248 8.44%    90 8.31%    68 8.34%     133 8.28%    1,399  8.61%   1,399
Commercial loans
(V)                  883  8.82%     32  8.47%   30 8.46%    28 8.45%    27 8.45%      82 8.44%    1,082  8.75%   1,082
Consumer loans
(F)                  252  8.92%    157  8.82%  110 8.72%    64 8.50%    39 8.31%      69 8.08%      691  8.71%     693
Consumer loans
(V)                  515 10.04%     16 13.38%   --    --    --    --    --    --      --    --      531 10.14%     530
                  ----------------------------------------------------------------------------------------------------
Total interest
earning assets    $3,932  8.53% $1,235  8.01% $995 7.97%  $655 7.63%  $552 7.45%  $2,737 7.08%  $10,106  7.90% $10,189
                  ----------------------------------------------------------------------------------------------------
Interest-bearing
deposits (F)      $3,221  5.69% $1,038  5.97% $181 6.11%  $ 39 5.72%  $ 25 5.84%  $    2 6.34%  $ 4,506  5.78% $ 4,520
Interest-bearing
deposits (V)       2,949  2.82%      4  5.55%   --    --    --    --    --    --      --    --    2,953  2.83%   2,953
Short-term
borrowings (V)     1,337  5.67%     --     --   --    --    --    --    --    --      --    --    1,337  5.67%   1,337
Long-term
borrowings (F)        --     --      4 14.27%    1 6.42%     1 7.17%     1 6.80%       8 6.62%       15  8.94%      15
                  ----------------------------------------------------------------------------------------------------
Total interest-
bearing
liabilities       $7,507  4.56% $1,046  6.01% $182 6.11%  $ 40 5.75%  $ 26 5.85%  $   10 6.56%  $ 8,811  4.78% $ 8,825
                  ----------------------------------------------------------------------------------------------------
</TABLE>
(V) Variable repricing terms
(F) Fixed repricing terms
 
In November 1997, the Corporation hedged certain agency issued zero-coupon
bonds held by FFC, with a carrying value of $37.2 million and a market value
of $41.6 million, by executing various interest rate futures contracts. These
contracts had a notional value of $70.5 million and a maturity date of March
1998. Subsequently, in January 1998, the futures contracts were closed and the
zero-coupon bonds were sold. A net gain of $5.1 million will be recognized, in
investment securities gains, in the first quarter of 1998 from these
transactions.
 
                                      31
<PAGE>
 
Interest rate sensitivity analysis can be performed in several different ways.
The traditional method of measuring interest sensitivity is called "gap"
analysis. Gap analysis is used to identify mismatches in the repricing of
assets and liabilities within specified periods of time or interest
sensitivity gaps.
 
For all assets and liabilities repriced within one year, the ratio of rate
sensitive assets to rate sensitive liabilities was 80.2% at December 31, 1997.
As presented, this traditional gap analysis does not accurately reflect the
Corporation's true rate sensitivity position. The categories of savings, NOW,
and money market accounts have been included in the 0-90 days category for
this gap analysis. While these accounts are contractually short-term in
nature, it is management's experience that repricing occurs over a longer
period of time. Gap analysis also does not reflect the modification of the
receipt of cash flows from principal repayments on mortgage related products,
both loan and investments, due to changes in interest rate environments.
Rising rates would extend the receipt of principal repayments closer to
contractual maturity, while declining rates would accelerate the receipt of
principal repayments.
 
TABLE 21: INTEREST RATE SENSITIVITY ANALYSIS
 
<TABLE>
<CAPTION>
                                                   DECEMBER 31, 1997
                         --------------------------------------------------------------------------
                                              INTEREST SENSITIVITY PERIOD
                         --------------------------------------------------------------------------
                                                                   TOTAL
                            0-90                     181-365      WITHIN       OVER 1
                            DAYS      91-180 DAYS     DAYS        1 YEAR        YEAR       TOTAL
                         -----------  -----------  -----------  -----------  ---------- -----------
                                                     (IN THOUSANDS)
<S>                      <C>          <C>          <C>          <C>          <C>        <C>
Earning assets:
 Loans, held for sale    $   114,001  $        --  $        --  $   114,001  $       -- $   114,001
 Investment
 securities(1)               746,661      375,446      754,847    1,876,954   1,022,004   2,898,959
 Loans, net of unearned
 income                    2,449,779      524,329    1,032,766    4,006,874   3,069,702   7,076,576
 Other earning assets         15,665           --           --       15,665          --      15,665
                         --------------------------------------------------------------------------
Total                    $ 3,326,106  $   899,775  $ 1,787,613  $ 6,013,494  $4,091,706 $10,105,201
                         ==========================================================================
Interest-bearing
liabilities:
 Interest-bearing
 deposits(2)             $ 3,981,761  $   894,645  $ 1,284,355  $ 6,160,761  $1,298,666 $ 7,459,427
 Other interest-bearing
 liabilities                 860,135      417,984       58,889    1,337,007      15,271   1,352,278
                         --------------------------------------------------------------------------
Total interest-bearing
liabilities              $ 4,841,896  $ 1,312,629  $ 1,343,244  $ 7,497,768  $1,313,937 $ 8,811,705
                         ==========================================================================
Interest sensitivity
gap                      $(1,515,790) $  (412,854) $   444,370  $(1,484,274) $2,777,770 $ 1,293,496
                         --------------------------------------------------------------------------
Cumulative interest
sensitivity gap          $(1,515,790) $(1,928,644) $(1,484,274)
Cumulative ratio of
rate sensitive assets
to rate sensitive
liabilities at December
31, 1997                        68.7%        68.7%        80.2%
                         ==========================================================================
</TABLE>
(1) Securities balances exclude $41.3 million of unrealized gains relating to
    available for sale securities.
(2) Savings, NOW, and money market account balances totaling $2.76 billion are
    included in the 0-90 days category. While these accounts are contractually
    short-term in nature, it is management's experience that repricing occurs
    over a longer period of time.
 
The Corporation uses simulation modeling results that incorporate the dynamics
of balance sheet and interest rate changes and reflect the related impact on
net interest income over a specified time horizon. The Corporation is
continually reviewing its interest rate risk position and modifying its
strategies based upon simulation projections under various interest rate
levels. Additionally, the Corporation may enter into interest rate swap
agreements to assist in managing interest rate risk. Management's philosophy
is to maintain an appropriate rate sensitive asset and liability position to
provide for stability in earnings in the event of significant interest rate
changes. The Corporation believes that it has an effective process for
managing interest rate risk.
 
CAPITAL
 
Stockholders' equity at December 31, 1997, increased to $813.7 million or
$16.15 per share compared with $803.6 million or $16.01 per share at the end
of 1996. The growth in stockholders' equity in 1997 was diminished by the
$89.8 million after-tax charge for merger, integration and other one-time
charges related to the merger with FFC. Year-end capital includes a $26.1
million equity component compared to $8.3
 
                                      32
<PAGE>
 
million at December 31, 1996, related to unrealized gains on securities
available for sale, net of tax effect. Period-end stockholders' equity to
assets in 1997 was 7.61% compared to 7.94% at the end of 1996.
 
Cash dividends paid in 1997 were $1.11 per share compared with $0.95 per share
in 1996, an increase of 17.0%. Cash dividends have increased at a 16.8%
compounded rate during the past five years.
 
The adequacy of the Corporation's capital is regularly reviewed to ensure that
sufficient capital is available for current and future needs and is in
compliance with regulatory guidelines. The assessment of overall capital
adequacy depends on a variety of factors, including asset quality, liquidity,
stability of earnings, changing competitive forces, economic condition in
markets served and strength of management.
 
As of December 31, 1997 and 1996, the Corporation's Tier 1 risk-based capital
ratios, total risk-based capital (Tier 1 and Tier 2) ratios and Tier 1
leverage ratios were well in excess of regulatory requirements. Management of
the Corporation expects to continue to exceed the minimum standards in the
future. Capital ratios are included in Note 19, Regulatory Matters, of the
notes to consolidated financial statements.
 
In 1997, the Corporation's Board of Directors authorized management to
repurchase up to 100,000 shares of the Corporation's common stock each
calendar quarter in the market. The shares repurchased would be available in
connection with the Corporation's employee incentive plans and for other
corporate purposes. Shares repurchased are held as treasury stock and,
accordingly, are accounted for as a reduction of stockholders' equity. The
Corporation purchased 81,736 of its common shares in 1997 and 92,684 in 1996.
 
Management believes that a strong capital position is necessary to take
advantage of opportunities for profitable geographic and product expansion,
and to provide depositor and investor confidence. The Corporation's capital
level remains strong, but must also be maintained at an appropriate level that
provides the opportunity for a superior return on capital employed. Management
actively reviews capital strategies for the Corporation and each of its
subsidiaries to ensure that capital levels are appropriate based on the
perceived business risks, future growth opportunities, industry standards, and
regulatory requirements.
 
YEAR 2000
 
The Corporation has completed its initial assessment of the Year 2000 issue.
The Year 2000 issue relates to systems designed to use two digits rather than
four to define the applicable year. This assessment was performed by an
independent third party. Management believes that all operating systems
critical to its delivery of customer service will be Year 2000 compliant prior
to December 31, 1998. The cost of implementing the recommendations of the
initial assessment are not deemed to be material, and thus, will not have a
significant impact on the Corporation's results of operations, liquidity or
capital resources.
 
ACCOUNTING DEVELOPMENTS
 
In June 1997, the Financial Accounting Standards Board (FASB) issued SFAS No.
130, "Reporting Comprehensive Income". SFAS 130 is effective for both interim
and annual periods beginning after December 15, 1997. SFAS 130 establishes
standards for reporting and display of comprehensive income and its components
in a full set of general purpose financial statements. It does not specify
when to recognize or how to measure items that make up comprehensive income.
SFAS 130 requires that all items that are required to be recognized under
accounting standards as components of comprehensive income be reported in a
financial statement that is displayed in equal prominence with the other
financial statements and requires that an enterprise display an amount
representing total comprehensive income for the period in that financial
statement. SFAS 130 requires classification of "other comprehensive income"
items by their nature in the financial statement and display of the balance of
other comprehensive income separately in the equity section of the statement
of financial position. It does not require per share amounts of comprehensive
income to be disclosed. Management of the Corporation does not expect that
adoption of SFAS 130 will have a material effect on the consolidated financial
statements of the Corporation.
 
                                      33
<PAGE>
 
In June 1997, the FASB issued SFAS No. 131, "Disclosures about Segments of an
Enterprise and Related Information". SFAS 131 is effective for financial
statements for periods beginning after December 15, 1997. SFAS 131 establishes
standards for the way public business enterprises are to report information
about operating segments in annual financial statements and requires those
enterprises to report selected information about operating segments in interim
financial reports issued to shareholders. It also establishes standards for
related disclosures about products and services, geographic areas, and major
customers. SFAS 131 replaces the "industry segment" concept of SFAS 14 with a
"management approach" concept as the basis for identifying reportable
segments. The management approach is based on the way that management
organizes the segments within the enterprise for making operating decisions
and assessing performance. Consequently, the segments are evident from the
structure of the enterprise's internal organization. It focuses on financial
information that an enterprise's decisionmakers use to make decisions about
the enterprise's operating matters. The Corporation will be adopting SFAS 131
in 1998.
 
                                      34
<PAGE>
 
ITEM 8 FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA
 
                              ASSOCIATED BANC-CORP
                 CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION
 
<TABLE>
<CAPTION>
                                                           DECEMBER 31,
                                                      ------------------------
                                                         1997         1996
                                                      -----------  -----------
                                                           (IN THOUSANDS
                                                        EXCEPT SHARE DATA)
<S>                                                   <C>          <C>
ASSETS
Cash and due from banks                               $   288,021  $   369,842
Interest-bearing deposits in other financial
institutions                                                4,154        3,183
Federal funds sold and securities purchased under
agreements to resell                                       11,511       27,977
Investment securities:
 Held to maturity--at amortized cost
 (Fair value of approximately $782,240 and $1,074,412
 at
 December 31, 1997 and 1996, respectively)                772,524    1,079,749
 Available for sale--at fair value                      2,167,694    1,674,189
Loans held for sale                                       114,001       42,490
Loans                                                   7,076,576    6,658,357
Allowance for possible loan losses                        (92,731)     (71,767)
- -------------------------------------------------------------------------------
  Loans, net                                            6,983,845    6,586,590
Premises and equipment                                    127,823      127,708
Other assets                                              221,866      211,655
- -------------------------------------------------------------------------------
  Total assets                                        $10,691,439  $10,123,383
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
LIABILITIES AND STOCKHOLDERS' EQUITY
Noninterest-bearing deposits                          $   904,710  $   804,020
Interest-bearing deposits                               7,459,427    7,155,278
- -------------------------------------------------------------------------------
  Total deposits                                        8,364,137    7,959,298
Short-term borrowings                                   1,337,008    1,201,393
Long-term borrowings                                       15,270       33,329
Accrued expenses and other liabilities                    161,331      125,801
- -------------------------------------------------------------------------------
  Total liabilities                                     9,877,746    9,319,821
- -------------------------------------------------------------------------------
Commitments and contingent liabilities                         --           --
- -------------------------------------------------------------------------------
Stockholders' equity
 Preferred stock (Par value $1.00 per share,
 authorized 750,000 shares, no shares issued)                  --           --
 Common stock (Par value $0.01 per share, authorized
 100,000,000 shares, issued 50,394,647 and 50,211,171
 shares at December 31, 1997 and 1996, respectively)          504          465
 Surplus                                                  218,072      230,810
 Retained earnings                                        569,996      564,924
 Net unrealized gain on securities available for
 sale, net of taxes                                        26,144        8,281
 Less: Treasury stock at cost (18,894 shares in 1997
 and 26,226 shares in 1996)                                (1,023)        (918)
- -------------------------------------------------------------------------------
  Total stockholders' equity                              813,693      803,562
- -------------------------------------------------------------------------------
  Total liabilities and stockholders' equity          $10,691,439  $10,123,383
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
</TABLE>
 
          See accompanying notes to Consolidated Financial Statements.
 
                                       35
<PAGE>
 
                              ASSOCIATED BANC-CORP
                       CONSOLIDATED STATEMENTS OF INCOME
 
<TABLE>
<CAPTION>
                                                   FOR THE YEARS ENDED
                                                       DECEMBER 31,
                                                ----------------------------
                                                  1997      1996      1995
                                                --------  --------  --------
                                                 (IN THOUSANDS EXCEPT PER
                                                       SHARE DATA)
<S>                                             <C>       <C>       <C>
INTEREST INCOME
Interest and fees on loans                      $592,071  $563,699  $534,269
Interest and dividends on investment
securities:
 Taxable                                         184,231   156,967   151,575
 Tax-exempt                                        9,164     8,827     7,584
Interest on deposits in other financial
institutions                                         779       437       596
Interest on federal funds sold and securities
purchased under agreements to resell                 999     1,267     2,426
Interest on trading account securities                --        --       408
- ----------------------------------------------------------------------------
   Total interest income                         787,244   731,197   696,858
- ----------------------------------------------------------------------------
INTEREST EXPENSE
Interest on deposits                             337,443   320,915   303,083
Interest on short-term borrowings                 72,509    52,184    55,105
Interest on long-term borrowings                   1,685     2,824     2,311
- ----------------------------------------------------------------------------
   Total interest expense                        411,637   375,923   360,499
- ----------------------------------------------------------------------------
NET INTEREST INCOME                              375,607   355,274   336,359
Provision for possible loan losses                31,668    13,695    14,029
- ----------------------------------------------------------------------------
Net interest income after provision for
possible loan losses                             343,939   341,579   322,330
- ----------------------------------------------------------------------------
NONINTEREST INCOME
Trust service fees                                28,764    25,185    22,243
Service charges on deposit accounts               27,909    26,004    23,861
Mortgage banking income                           25,709    23,873    18,052
Loan fees                                         16,407    14,505    13,023
Retail commission income                          15,446    12,757    10,760
Asset sale gains, net                                852    12,520       428
Investment securities gains (losses), net        (32,776)  (10,678)    1,512
Other                                             13,665    12,679    15,110
- ----------------------------------------------------------------------------
   Total noninterest income                       95,976   116,845   104,989
- ----------------------------------------------------------------------------
NONINTEREST EXPENSE
Salaries and employee benefits                   133,656   126,154   115,837
Net occupancy expense                             20,297    19,563    19,159
Data processing expense                           16,900    15,905    15,068
Business development and advertising              15,936    14,754    11,120
Equipment rentals, depreciation and
maintenance                                       12,600    12,033    11,433
Stationery and supplies                            5,532     5,030     5,325
FDIC expense                                       3,284     9,675    13,799
Merger, integration and other one-time charges    51,622    33,005     6,458
Other                                             63,820    57,116    54,728
- ----------------------------------------------------------------------------
   Total noninterest expense                     323,647   293,235   252,927
- ----------------------------------------------------------------------------
Income before income taxes and extraordinary
item                                             116,268   165,189   174,392
Income tax expense                                63,909    57,487    62,381
- ----------------------------------------------------------------------------
Income before extraordinary item                  52,359   107,702   112,011
Extraordinary item, net of income taxes of
$370                                                  --      (686)       --
- ----------------------------------------------------------------------------
Net income                                      $ 52,359  $107,016  $112,011
- ----------------------------------------------------------------------------
- ----------------------------------------------------------------------------
Earnings per share:
 Basic:
  Income before extraordinary item              $   1.04  $   2.13  $   2.28
  Extraordinary item                                  --      (.01)       --
  Net income                                    $   1.04  $   2.12  $   2.28
 Diluted:
  Income before extraordinary item              $   1.02  $   2.09  $   2.24
  Extraordinary item                                  --      (.01)       --
  Net Income                                    $   1.02  $   2.08  $   2.24
- ----------------------------------------------------------------------------
- ----------------------------------------------------------------------------
</TABLE>
 
          See accompanying notes to Consolidated Financial Statements.
 
                                       36
<PAGE>
 
                              ASSOCIATED BANC-CORP
           CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY
 
<TABLE>
<CAPTION>
                                                                NET
                                                             UNREALIZED
                                                                GAIN
                                                             (LOSS) ON             COMMON
                          COMMON STOCK                       SECURITIES             STOCK
                          --------------           RETAINED  AVAILABLE  TREASURY  PURCHASED
                          SHARES  AMOUNT SURPLUS   EARNINGS   FOR SALE   STOCK     BY ESOP   TOTAL
                          ------  ------ --------  --------  ---------- --------  --------- --------
                                                      (IN THOUSANDS)
<S>                       <C>     <C>    <C>       <C>       <C>        <C>       <C>       <C>
Balance, December 31,
1994, as previously
reported                  14,531   $145  $159,086  $148,081   $(3,986)  $(4,043)   $   --   $299,283
Adjustment to
retroactively restate
1997 business
combinations accounted
for as pooling of
interests                 27,850    278    75,214   261,949   ( 8,619)       --    (1,608)   327,214
- -----------------------------------------------------------------------------------------------------
Balance December 31,
1994, as restated         42,381    423   234,300   410,030   (12,605)   (4,043)   (1,608)   626,497
- -----------------------------------------------------------------------------------------------------
Net income                    --     --        --   112,011        --        --        --    112,011
Cash dividends, $0.81
per share                     --     --        --   (16,924)       --        --        --    (16,924)
Cash dividends of pooled
affiliates                    --     --        --   (14,156)       --        --        --    (14,156)
5-for-4 stock split
effected in the form of
a stock dividend           3,153     32        --       (32)       --        --        --         --
Exercise of incentive
stock options                509      5     2,610        --        --     1,863        --      4,478
Payment on ESOP loan          --     --        --        --        --        --       790        790
Tax benefits of
restricted shares and
options                       --     --       443        --        --        --        --        443
Change in unrealized
gain (loss) on
securities available for
sale, net of related
income taxes                  --     --        --        --    12,693        --        --     12,693
Reissuance of treasury
stock in a business
combination                  (15)    --      (478)       --        --       478        --         --
Purchase of treasury
stock                         --     --        --        --        --    (2,085)       --     (2,085)
Pre-merger transactions
of pooled company             44     --       822        --        --        --       547      1,369
- -----------------------------------------------------------------------------------------------------
Balance, December 31,
1995                      46,072    460   237,697   490,929        88    (3,787)     (271)   725,116
- -----------------------------------------------------------------------------------------------------
Net income                    --     --        --   107,016        --        --        --    107,016
Cash dividends, $0.95
per share                     --     --        --   (20,278)       --        --        --    (20,278)
Cash dividends of pooled
affiliates                    --     --        --   (19,309)       --        --        --    (19,309)
Issuance of stock in
connection with business
combinations                 868      9     9,800     6,566         8        --        --     16,383
Exercise of incentive
stock options                303      3       966        --        --     2,208        --      3,177
Tax benefits of
restricted shares and
options                       --     --       564        --        --        --        --        564
Retirement of stock
previously issued in
connection with a
business combination        (212)    (2)   (3,760)       --        --     3,762        --         --
Payment on ESOP loan          --     --        --        --        --        --       271        271
Change in unrealized
gain (loss) on
securities available for
sale, net of related
income taxes                  --     --        --        --     8,185        --        --      8,185
Purchase of treasury
stock                         --     --        --        --        --    (3,101)              (3,101)
Pre-merger transactions
of pooled company           (496)    (5)  (14,457)       --        --        --        --    (14,462)
- -----------------------------------------------------------------------------------------------------
Balance, December 31,
1996                      46,535    465   230,810   564,924     8,281      (918)       --    803,562
- -----------------------------------------------------------------------------------------------------
Net income                    --     --        --    52,359        --        --        --     52,359
Cash dividends, $1.11
per share                     --     --        --   (16,983)       --        --        --    (16,983)
Cash dividends of pooled
affiliates                    --     --        --   (32,345)       --        --        --    (32,345)
6-for-5 stock split
effected in the form of
a stock dividend           3,746     37       (37)       --        --        --        --         --
Issuance of stock in
connection with business
combinations                 345      4     3,778     4,218        64        --        --      8,064
Exercise of incentive
stock options                382      4     3,847    (2,177)       --     3,494        --      5,168
Tax benefits of
restricted shares and
options                       --     --       716        --        --        --        --        716
Change in unrealized
gain (loss) on
securities available for
sale, net of related
income taxes                  --     --        --        --    17,799        --        --     17,799
Purchase of treasury
stock                         --     --        --        --        --    (3,599)       --     (3,599)
Pre-merger transactions
of pooled company           (613)    (6)  (21,042)       --        --        --        --    (21,048)
- -----------------------------------------------------------------------------------------------------
Balance, December 31,
1997                      50,395   $504  $218,072  $569,996   $26,144   $(1,023)       --   $813,693
- -----------------------------------------------------------------------------------------------------
- -----------------------------------------------------------------------------------------------------
</TABLE>
 
          See accompanying notes to Consolidated Financial Statements.
 
                                       37
<PAGE>
 
                              ASSOCIATED BANC-CORP
                     CONSOLIDATED STATEMENTS OF CASH FLOWS
 
<TABLE>
<CAPTION>
                                              FOR THE YEARS ENDED DECEMBER
                                                           31,
                                             ---------------------------------
                                               1997        1996        1995
                                             ---------  ----------  ----------
                                                     (IN THOUSANDS)
<S>                                          <C>        <C>         <C>
OPERATING ACTIVITIES
 Net Income                                  $  52,359  $  107,016  $  112,011
Adjustments to reconcile net income to net
cash provided by operating activities:
 Provision for possible loan losses             31,668      13,695      14,029
 Provision for losses on other real estate
 owned                                              --        (467)        502
 Depreciation and amortization                  14,418      14,415      13,075
 Amortization of mortgage servicing rights       6,472       4,237       2,537
 Amortization of intangibles                     6,217      11,983       8,306
 Deferred income taxes                         (20,953)     (4,342)     (6,174)
 Net amortization (accretion) of premiums
 and discounts                                  (1,499)     (9,116)      1,091
 (Gain) loss on sales of securities, net        32,776      10,678      (1,512)
 Decrease (increase) in interest receivable
 and other assets                               (1,663)      8,369      (9,548)
 Increase in interest payable and other
 liabilities                                    33,597       7,842      16,389
 Amortization (accretion) of loan fees and
 costs                                            (522)        151        (224)
 Purchase of trading account securities             --          (5)     (1,294)
 Proceeds from sales of trading account
 securities                                         --          37       1,332
 Net (increase) decrease in loans held for
 sale                                            5,810      29,586     (17,112)
 Gain on sales of loans held for sale, net      (8,981)     (6,976)     (3,390)
 Gain on other asset sales, net                   (852)    (12,520)       (428)
 Other, net                                         --        (417)        165
- -------------------------------------------------------------------------------
Net cash provided by operating activities    $ 148,847  $  174,166  $  129,755
- -------------------------------------------------------------------------------
INVESTING ACTIVITIES
Net decrease in federal funds sold and
securities purchased under agreements to
resell                                       $  20,891  $   31,698  $   12,535
Net decrease (increase) in interest-bearing
deposits in other financial institutions          (971)     32,398     (11,391)
Purchases of held to maturity securities      (203,759)   (192,744)   (205,029)
Purchases of available for sale securities    (316,112) (1,156,929)   (132,740)
Proceeds from sales of available for sale
securities                                      71,178     434,145      20,946
Maturities of held to maturity securities      258,034     351,966     408,376
Maturities of available for sale securities     29,260     362,536     149,199
Net increase in loans                         (466,093)   (418,676)   (427,980)
Proceeds from sales of other real estate
owned                                            7,177       9,262       9,440
Purchases of premises and equipment, net of
disposals                                      (11,805)    (27,528)     (7,737)
Mortgage servicing rights additions             (9,801)     (8,867)     (8,341)
Net cash received (paid) in acquisition of
subsidiary                                       5,051         461        (480)
Proceeds from sale of other assets                 343      62,573         182
- -------------------------------------------------------------------------------
Net cash used by investing activities        $(616,607) $ (519,705) $ (193,020)
- -------------------------------------------------------------------------------
FINANCING ACTIVITIES
Net increase in deposits                     $ 337,191  $  163,736  $  229,058
Net increase (decrease) in short-term
borrowings                                     117,555     264,186     (40,723)
Cash dividends                                 (49,328)    (39,587)    (31,080)
Repayment of long-term borrowings                   --      (2,644)    (80,081)
Proceeds from issuance of long-term
borrowings                                          --       6,000      15,000
Proceeds from exercise of stock options          5,168       3,177       4,478
Proceeds from vesting of employee benefit
plans                                               --         271       1,929
Stock purchases by pooled company              (21,048)    (14,447)         --
Purchase of treasury stock                      (3,599)     (3,101)     (2,085)
- -------------------------------------------------------------------------------
Net cash provided by financing activities    $ 385,939  $  377,591  $   96,496
- -------------------------------------------------------------------------------
Net increase (decrease) in cash and cash
equivalents                                    (81,821)     32,052      33,231
Cash and due from banks at beginning of
year                                           369,842     337,790     304,559
- -------------------------------------------------------------------------------
Cash and due from banks at end of year       $ 288,021  $  369,842  $  337,790
- -------------------------------------------------------------------------------
Supplemental disclosures of cash flow
information:
Cash paid during the year for:
 Interest                                    $ 409,797  $  375,318  $  349,899
 Income taxes                                   79,440      59,661      67,741
Supplemental schedule of noncash investing
activities:
 Loans transferred to other real estate          5,263       9,135       7,409
 Loans made in connection with the
 disposition of other real estate                  240         223         177
 Mortgage loans securitized and transferred
 to securities available for sale                   --     161,087          --
 Securities transferred from held to
 maturity to available for sale                251,946          --     412,771
 Mortgage loans transferred to loans held
 for sale                                       68,340      27,068      15,467
 Acquisitions:
 Fair value of assets acquired, including
 cash and cash equivalents                          --      40,715       3,670
 Value ascribed to intangibles                      --       1,900       1,462
 Liabilities assumed                                --      34,772       5,132
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
</TABLE>
 
          See accompanying notes to Consolidated Financial Statements.
 
                                       38
<PAGE>
 
                             ASSOCIATED BANC-CORP
                  NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                       DECEMBER 31, 1997, 1996, AND 1995
 
NOTE 1 SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES:
 
The accounting and reporting policies of Associated Banc-Corp and its
subsidiaries (Corporation) conform to generally accepted accounting principles
and to general practice within the banking and mortgage banking industries.
The following is a description of the more significant of those policies.
 
Throughout the notes to Consolidated Financial Statements, references are made
to FFC (First Financial Corporation) and its wholly owned subsidiary FFB
(First Financial Bank).
 
BUSINESS
 
The Corporation provides a full range of banking and related financial
services to individual and corporate customers through its network of bank and
nonbank affiliates in Wisconsin, Illinois, Nevada, Arizona, California and
Missouri. The Corporation is subject to competition from other financial
institutions and is regulated by federal and state banking agencies and
undergoes periodic examinations by those agencies.
 
BASIS OF FINANCIAL STATEMENT PRESENTATION
 
The Consolidated Financial Statements include the accounts of the Corporation
and subsidiaries, all of which are wholly-owned. All significant intercompany
accounts and transactions have been eliminated in consolidation. Results of
operations of companies purchased are included from the date of acquisition.
The Consolidated Financial Statements have been restated to include companies
acquired under pooling of interests when material. Certain amounts in the 1995
and 1996 consolidated financial statements have been reclassified to conform
with the 1997 presentation.
 
In preparing the Consolidated Financial Statements, management is required to
make estimates and assumptions that affect the reported amounts of assets and
liabilities as of the date of the balance sheet and revenues and expenses for
the period. Actual results could differ significantly from those estimates.
Estimates that are particularly susceptible to significant change include the
determination of the allowance for possible loan losses and the valuation of
investments and mortgage servicing rights.
 
INVESTMENT SECURITIES
 
Securities are classified as held to maturity, available for sale, or trading.
Investment securities classified as held to maturity, which management has the
intent and ability to hold to maturity, are reported at amortized cost,
adjusted for amortization of premiums and accretion of discounts using a
method that approximates level yield. The amortized cost of debt securities
classified as held to maturity or available for sale is adjusted for
amortization of premiums and accretion of discounts to earlier of call date or
maturity, or in the case of mortgage-related securities, over the estimated
life of the security. Such amortization and accretion is included in interest
income from the related security. Available for sale and trading securities
are reported at fair value with unrealized gains and losses, net of related
deferred income taxes, included in stockholders' equity or income,
respectively. Realized securities gains or losses and declines in value judged
to be other than temporary are included in investment securities gains
(losses), net in the consolidated statements of income. The cost of securities
sold is based on the specific identification method. Any security for which
there has been other than temporary impairment of value is written down to its
estimated market value.
 
In determining if declines in value are other than temporary, management
estimates future cash flows to be generated by pools of loans underlying the
mortgage-related securities. Included in this evaluation are such factors as
(i) estimated loan prepayment rates, (ii) a review of delinquencies,
foreclosures, repossessions and recovery rates relative to the underlying
mortgage loans collateralizing each security, (iii) the level of available
subordination or other credit enhancements, (iv) an assessment of the servicer
of the underlying mortgage portfolio and (v) the rating assigned to each
security by independent national rating agencies.
 
 
                                      39
<PAGE>
 
LOANS
 
Loans and leases are carried at the principal amount outstanding, net of any
unearned income. Unearned income, primarily from direct leases, is recognized
on a basis that generally approximates a level yield on the outstanding
balances receivable. Interest on all other loans is based upon the principal
amount outstanding.
 
Loans are normally placed on nonaccrual status when contractually past due 90
days or more as to interest or principal payments. Additionally, whenever
management becomes aware of facts or circumstances that may adversely impact
on the collectibility of principal or interest on loans, it is management's
practice to place such loans on nonaccrual status immediately, rather than
delaying such action until the loans become 90 days past due. Previously
accrued and uncollected interest on such loans is reversed, amortization of
related loan fees is suspended, and income is recorded only to the extent that
interest payments are subsequently received in cash and a determination has
been made that the principal balance of the loan is collectable. If
collectibility of the principal is in doubt, payments received are applied to
loan principal.
 
Loan origination fees and certain direct loan origination costs on real estate
and commercial loans are deferred and recognized as an adjustment of yield
using the interest method. Nonrefundable fees and direct origination costs
associated with installment loans are insignificant and are not accounted for
as an adjustment of yield of the related loan categories. Loan origination
fees and direct origination costs on residential real estate loans held for
sale are also not accounted for as an adjustment of yield. All other loan fees
are included in other income.
 
LOANS HELD FOR SALE
 
Loans held for sale are recorded at the lower of cost or market as determined
on an aggregate basis and generally consist of current production of certain
fixed-rate first mortgage loans. Holding costs are treated as period costs.
 
ALLOWANCE FOR POSSIBLE LOAN LOSSES
 
The allowance for possible loan losses is a reserve for estimated credit
losses. Credit losses arise primarily from the loan portfolio. Actual credit
losses, net of recoveries, are deducted from the allowance for possible loan
losses. A provision for possible loan losses, which is a charge against
earnings, is added to bring the allowance to a level that, in management's
judgment, is adequate to absorb losses inherent in the loan portfolio.
Management performs an ongoing assessment of the loan portfolio to determine
the appropriate level of the allowance. The factors considered in the
evaluation include, but are not necessarily limited to, estimated losses from
loans, general economic conditions, deterioration in credit concentration or
pledged collateral, historical loss experience, and trends in portfolio
volume, maturity, composition, delinquencies and nonaccruals. Estimated credit
losses related to off balance sheet arrangements, if any, are included in
accrued expenses and other liabilities.
 
Management, considering current information and events regarding the
borrower's ability to repay their obligations, considers a loan to be impaired
when it is probable that the Corporation will be unable to collect all amounts
due according to the contractual terms of the note agreement, including
principal and interest. Management has determined that commercial loans and
commercial real estate loans that have a nonaccrual status or have had their
terms restructured meet this definition. Large groups of homogeneous loans,
such as mortgage and installment loans and leases, are collectively evaluated
for impairment. The amount of impairment is measured based on the fair value
of the collateral, if the loan is collateral dependent, or alternatively, at
the present value of expected future cash flows discounted at the loan's
effective interest rate. Interest income on impaired loans is recorded when
cash is received and only if principal is considered to be fully collectable.
 
Management believes that the allowance for possible loan losses is adequate.
While management uses available information to recognize losses on loans,
future additions to the allowance may be necessary based on changes in
economic conditions. In addition, various regulatory agencies, as an integral
part of their examination process, periodically review the Corporation's
allowance for possible loan losses. Such
 
                                      40
<PAGE>
 
agencies may require the Corporation to recognize additions to the allowance
based on their judgments about information available to them at the time of
their examinations.
 
REAL ESTATE ACQUIRED IN FORECLOSURE
 
Real estate acquired in foreclosure includes properties acquired in partial or
total satisfaction of loans and is included in other assets in the
accompanying consolidated statements of financial condition. Properties are
recorded at the lower of recorded investment in the loans at the time of
acquisition or the fair value of the properties, less estimated selling costs.
Any write-down in the carrying value of a property at the time of acquisition
is charged to the allowance for possible loan losses. Any subsequent write-
downs to reflect current fair market value, as well as gains and losses on
disposition and revenues and expenses incurred in maintaining such properties,
are expensed.
 
PREMISES AND EQUIPMENT
 
Premises and equipment are stated at cost less accumulated depreciation and
amortization. Depreciation and amortization are computed on the straight-line
method over the estimated useful lives of the related assets or the lease
term. Maintenance and repairs are charged to expense as incurred while
additions or major improvements are capitalized and depreciated over their
estimated useful lives. Estimated useful lives for premises include periods up
to 50 years and for equipment include periods up to 10 years.
 
INTANGIBLES
 
The excess of the purchase price over the fair value of net assets of
subsidiaries acquired consists primarily of goodwill and core deposit
intangibles that are being amortized on straight-line and accelerated methods.
Goodwill is amortized to operating expense over periods of 10 to 40 years.
Core deposit intangibles are amortized to expense over periods of 7 to 10
years. Other intangibles are amortized on an accelerated basis over shorter
periods. The Corporation reviews long-lived assets and certain identifiable
intangibles for impairment whenever events or changes in circumstances
indicate that the carrying amount of an asset may not be recoverable.
Recoverability of assets to be held and used is measured by a comparison of
the carrying amount of an asset to future net cash flows expected to be
generated by the asset. If such assets are considered to be impaired, the
impairment to be recognized is measured by the amount by which the carrying
amount of the assets exceed the fair value of the assets. Assets to be
disposed of are reported at the lower of the carrying amount or fair value
less costs to sell.
 
During 1997 and 1996, the Corporation recorded additional goodwill and deposit
base intangible amortization of $1.6 million and $4.2 million, respectively.
 
Goodwill outstanding, net of accumulated amortization, at December 31, 1997
and 1996 was $22.7 million and $26.7 million, respectively. Deposit base
intangibles outstanding, net of accumulated amortization, at December 31, 1997
and 1996 was $11.7 million and $15.6 million, respectively.
 
MORTGAGE SERVICING RIGHTS
 
The Corporation recognizes as separate assets the rights to service mortgage
loans for others, however those rights are acquired. Capitalized mortgage
servicing rights are assessed for impairment based on the fair value of those
rights.
 
The fair value of mortgage servicing rights is determined based on quoted
market prices for comparable transactions or a present value model of expected
future cash flows. Mortgage servicing rights are amortized proportionately in
relation to the associated servicing revenues over the estimated lives of the
serviced loans. The Corporation evaluates and measures impairment of its
servicing rights using stratifications based on the risk characteristics of
the underlying loans. Management has determined those risk characteristics to
include method of acquisition (bulk versus loan-by-loan). Bulk acquisitions
are further stratified by loan type, while loan-by-loan acquisitions are
further stratified by loan type and interest rate. Impairment is recognized
through a valuation allowance.
 
Deferred servicing rights are recorded when mortgage loans are sold with
servicing retained and the actual service fee rate is in excess of the normal
service fee rate. The present value of the deferred servicing rights is
amortized on an accelerated basis over the estimated life of the remaining
loan portfolio. The effects of prepayments are recognized based upon both
historical and current prepayment conditions.
 
                                      41
<PAGE>
 
Effective January 1, 1997, the Corporation adopted Statement of Financial
Accounting Standards (SFAS) No. 125, "Accounting for Transfers and Servicing
of Financial Assets and Extinguishments of Liabilities." SFAS No. 125 requires
that after a transfer of financial assets, the Corporation must recognize the
financial and servicing assets controlled and liabilities incurred, and
derecognize financial assets and liabilities in which control is surrendered
or debt is extinguished. In such cases, servicing assets are determined based
on estimated future revenues from contractually specified servicing fees and
other ancillary revenues that are expected to compensate the Corporation for
performing the servicing. The adoption of SFAS No. 125 has not had a material
effect on the Corporation's consolidated financial statements.
 
INCOME TAXES
 
Amounts provided for income tax expense are based on income reported for
financial statement purposes and do not necessarily represent amounts
currently payable under tax laws. Deferred income taxes, which arise
principally from temporary differences between the period in which certain
income and expenses are recognized for financial accounting purposes and the
period in which they affect taxable income, are included in the amounts
provided for income taxes.
 
The Corporation files a consolidated federal income tax return and individual
subsidiary state income tax returns. Accordingly, amounts equal to tax
benefits of those subsidiaries having taxable federal losses or credits are
reimbursed by other subsidiaries that incur federal tax liabilities.
 
DERIVATIVE FINANCIAL INSTRUMENTS
 
The Corporation enters into interest rate swap agreements to manage interest
rate exposure in its loan portfolio from changes in market interest rates.
These agreements involve the receipt of fixed or floating rate amounts in
exchange for floating or fixed rate interest payments over the life of the
agreement without an exchange of the underlying principal amount. The
differential to be paid or received is accrued monthly and recognized as an
adjustment to interest income or expense. The related amount payable to or
receivable from counterparties is included in other liabilities or assets. The
fair values of the swap agreements are not recognized in the consolidated
financial statements. Gains or losses from terminated agreements are deferred
and accreted or amortized to interest income over the remaining life of the
asset related to the terminated agreement.
 
Interest rate futures contracts are commitments to either purchase or sell a
financial instrument at a specified price on an agreed-upon future date. These
contracts may be settled either in cash or by delivery of the underlying
financial instruments. Positions which are designated and effectively hedge
specific securities are correlated based on certain duration and convexity
parameters. Realized gains and losses on positions used in the management of
specific asset positions are deferred and amortized over the terms of the item
hedged as adjustments to interest income. Gains or losses from terminated
contracts are recognized as an adjustment to the hedged asset's recognized
gain or loss, included in investment security sales gains or losses in
noninterest income.
 
STOCK OPTION PLAN
 
The Corporation accounts for its stock option and equity awards in accordance
with Accounting Principles and Board Opinion No. 25 (APB Opinion No. 25) and
related interpretations. The Corporation adopted SFAS No. 123, "Accounting for
Stock-Based Compensation in 1996." The Corporation has included in Note 11 the
impact of the fair value of employee stock-based compensation plans on net
income and earnings per share on a pro forma basis for awards granted since
January 1, 1995, pursuant to SFAS No. 123.
 
CASH AND CASH EQUIVALENTS
 
For purposes of the consolidated statements of cash flows, cash and cash
equivalents are considered to include cash and due from banks.
 
PER SHARE COMPUTATIONS
 
The Corporation adopted SFAS No. 128, "Earnings Per Share," which became
effective at year end 1997 for all periods presented. Under the provisions of
SFAS No. 128, primary and fully diluted earnings per
 
                                      42
<PAGE>
 
share were replaced with basic and diluted earnings per share. Basic earnings
per share is calculated by dividing net income available to common
stockholders by the weighted average number of common shares outstanding.
Diluted earnings per share is calculated by dividing net income by the
weighted average number of shares adjusted for the dilutive effect of
outstanding stock options.
 
All per share financial information except for the share information in the
consolidated statements of changes in stockholders' equity, has been adjusted
to reflect the 5-for-4 stock split, effected as a 25% stock dividend, paid to
shareholders on June 15, 1995, and the 6-for-5 stock split, effected as a 20%
stock dividend, paid to shareholders on March 17, 1997. The Corporation issued
500,995 shares of common stock to a wholly owned subsidiary as part of the
1996 acquisition of F&M Bankshares of Reedsburg, Inc. These shares are not
reflected on the consolidated statements of financial condition as issued or
outstanding nor were they adjusted for the 6-for-5 stock split.
 
NOTE 2 BUSINESS COMBINATIONS:
 
The following table summarizes completed transactions during the three years
ended December 31, 1997:
 
<TABLE>
<CAPTION>
                                                      CONSIDERATION PAID
                                                    ------------------------
                                                                  SHARES OF
                                  DATE   METHOD OF      CASH        COMMON   TOTAL ASSETS   INTANGIBLES
   NAME OF ACQUIRED COMPANY     ACQUIRED ACCOUNTING (IN MILLIONS)  STOCK(A)  (IN MILLIONS) (IN MILLIONS)
- --------------------------------------------------------------------------------------------------------
<S>                             <C>      <C>        <C>           <C>        <C>           <C>
FirstRock Bancorp, Inc. (C)(F)    2/95   Pooling of     $--        4,175,381    $  377         $ --
Rockford, Illinois                       interests
Great Northern Mortgage           7/95   Purchase       1.2               --        (B)         1.5
Company
Rolling Meadows, Illinois
GN Bancorp, Inc. (C) Chicago,     8/95   Pooling of      --          897,151       130           --
Illinois                                 interests
SBL Capital Bank Shares,          3/96   Pooling of      --          399,548        68           --
Inc. (D)                                 interests
Lodi, Wisconsin
Greater Columbia Bank Shares,     4/96   Pooling of      --        1,161,161       211           --
Inc. (C)                                 interests
Portage, Wisconsin
F&M Bankshares of Reedsburg,      7/96   Pooling of      --          641,988       139           --
Inc.                                     interests
Reedsburg, Wisconsin (D)(E)
Mid-America National Bancorp,     7/96   Purchase       7.8               --        39          1.9
Inc.
Chicago, Illinois
Centra Financial, Inc. (D)        2/97   Pooling of      --          414,365        76           --
West Allis, Wisconsin                    interests
First Financial                  10/97   Pooling of     0.1       27,835,929     6,005           --
Corporation (C)                          interests
Stevens Point, Wisconsin
</TABLE>
 
(A) Share amounts have been restated to reflect the 6-for-5 stock split to be
    effected as a 20% stock dividend payable on March 17, 1997, to
    shareholders of record at the close of business on March 5, 1997.
 
(B)The Corporation acquired approximately $535 million in mortgage servicing
as part of this acquisition.
 
(C) All consolidated financial information has been restated as if the
    transaction had been effected as of the beginning of the earliest period
    presented.
 
(D) The transaction was not material to prior years' reported operating
    results and, accordingly, previously reported results were not restated.
 
(E)See "Per Share Computations" in Note 1.
 
(F)Acquired by FFC prior to its merger with the Corporation.
 
                                      43
<PAGE>
 
NOTE 3 MERGER, INTEGRATION AND OTHER ONE-TIME CHARGES:
 
The Corporation recorded merger, integration and other one-time charges of
$51.6 million, $33.0 million and $6.5 million in 1997, 1996 and 1995,
respectively. Merger, integration and other one-time charges of $51.6 million
recorded in 1997 were associated with the acquisition of FFC. One-time charges
in 1996 consist of $28.8 million associated with the recapitalization of the
Savings Association Insurance Fund (SAIF) and $4.2 million relating to a
change in accounting for the amortization of goodwill and other intangible
assets. Merger and integration charges recorded in 1995 relate to the
acquisition of FirstRock Bancorp, Inc. by FFC. The components of the charges
are shown below:
<TABLE>
<CAPTION>
                                                         YEAR ENDED DECEMBER
                                                                 31,
                                                        ----------------------
                                                         1997    1996    1995
                                                        ------- ------- ------
                                                            (IN THOUSANDS)
<S>                                                     <C>     <C>     <C>
Employee/director severance and contract costs          $12,598 $    -- $3,813
SAIF recapitalization charge                                 --  28,767     --
Costs associated with duplicative facilities, computer
systems, software and integration                        20,181      --    740
Investment banking, legal and accounting fees            11,151      --  1,035
Change in accounting for the amortization of goodwill
and other intangible assets                                  --   4,238     --
Other                                                     7,692      --    870
                                                       -----------------------
  Total merger, integration and other one-time charges  $51,622 $33,005 $6,458
                                                       -----------------------
                                                       -----------------------
</TABLE>
 
The pretax impact of merger, integration and other one-time charges on basic
earnings per share was $1.03, $0.65 and $0.13 in 1997, 1996 and 1995
respectively. The pretax effect of these charges on diluted earnings per share
was $1.01 in 1997, $0.64 in 1996, and $0.13 in 1995.
 
The 1997 merger, integration and other one-time charges of $51.6 million
consisted of $22.5 million in cash expenditures made in 1997, $4.5 million in
noncash asset write-downs and $24.6 million in anticipated cash expenditures
which the Corporation expects will be paid in 1998.
 
In addition, as a result of the merger with FFC, the Corporation also recorded
an additional provision for possible loan losses of $16.8 million in order to
conform with the policies, practices and procedures of the Corporation, and as
discussed in Note 5, Investment Securities, a $35.3 million pre-tax charge for
other than temporary impairment of value in the fourth quarter of 1997.
 
NOTE 4 RESTRICTIONS ON CASH AND DUE FROM BANKS:
 
The Corporation's bank subsidiaries are required to maintain certain vault
cash and reserve balances with the Federal Reserve Bank to meet specific
reserve requirements. These requirements approximated $57.4 million at
December 31, 1997.
 
                                      44
<PAGE>
 
NOTE 5 INVESTMENT SECURITIES:
 
The amortized cost and fair values of securities held to maturity at December
31, 1997 and 1996 were as follows:
 
<TABLE>
<CAPTION>
                                                       1997
                                            -----------------------------------
                                                 GROSS      GROSS
                                    AMORTIZED  UNREALIZED UNREALIZED    FAIR
                                       COST      GAINS      LOSSES     VALUE
                                            -----------------------------------
                                                  (IN THOUSANDS)
<S>                                 <C>        <C>        <C>        <C>
U.S. Treasury securities            $      498  $     2    $     --  $      500
Federal agency securities              146,259      896        (337)    146,818
Mortgage-related securities            361,298    6,540      (1,886)    365,952
Obligations of state and political
subdivisions                           183,286    3,038         (24)    186,300
Other securities (debt)                 81,183    1,491          (4)     82,670
                                    -------------------------------------------
Total                               $  772,524  $11,967    $ (2,251) $  782,240
                                    ===========================================
<CAPTION>
                                                       1996
                                            -----------------------------------
                                                 GROSS      GROSS
                                    AMORTIZED  UNREALIZED UNREALIZED    FAIR
                                       COST      GAINS      LOSSES     VALUE
                                            -----------------------------------
                                                  (IN THOUSANDS)
<S>                                 <C>        <C>        <C>        <C>
U.S. Treasury securities            $    4,204  $     9    $    (10) $    4,203
Federal agency securities              143,927      922        (928)    143,921
Mortgage-related securities            673,990    6,676     (12,298)    668,368
Obligations of state and political
subdivisions                           195,860    1,326      (1,621)    195,565
Other securities (debt)                 61,768      674         (87)     62,355
                                    -------------------------------------------
Total                               $1,079,749  $ 9,607    $(14,944) $1,074,412
                                    ===========================================
</TABLE>
 
The amortized cost and fair values of securities available for sale at
December 31, 1997 and 1996 were as follows:
 
<TABLE>
<CAPTION>
                                                       1997
                                            -----------------------------------
                                                 GROSS      GROSS
                                    AMORTIZED  UNREALIZED UNREALIZED    FAIR
                                       COST      GAINS      LOSSES     VALUE
                                            -----------------------------------
                                                  (IN THOUSANDS)
<S>                                 <C>        <C>        <C>        <C>
U.S. Treasury securities            $  109,200  $   737    $   (96)  $  109,841
Federal agency securities              324,708    7,558     (1,724)     330,542
Mortgage-related securities          1,536,134   21,848       (379)   1,557,603
Obligations of state and political
subdivisions                            14,312      229       (405)      14,136
Other securities (debt and equity)     142,081   14,178       (687)     155,572
                                    -------------------------------------------
Total                               $2,126,435  $44,550    $(3,291)  $2,167,694
                                    ===========================================
<CAPTION>
                                                       1996
                                            -----------------------------------
                                                 GROSS      GROSS
                                    AMORTIZED  UNREALIZED UNREALIZED    FAIR
                                       COST      GAINS      LOSSES     VALUE
                                            -----------------------------------
                                                  (IN THOUSANDS)
<S>                                 <C>        <C>        <C>        <C>
U.S. Treasury securities            $  149,314  $   655    $  (233)  $  149,736
Federal agency securities              326,049    2,156       (828)     327,377
Mortgage-related securities          1,057,992    5,667     (4,058)   1,059,601
Other securities (debt and equity)     127,787   10,446       (758)     137,475
                                    -------------------------------------------
Total                               $1,661,142  $18,924    $(5,877)  $1,674,189
                                    ===========================================
</TABLE>
 
                                      45
<PAGE>
 
The amortized cost and fair values of securities held to maturity and
securities available for sale at December 31, 1997, by contractual maturity
are shown below. Expected maturities will differ from contractual maturities
because borrowers may have the right to call or repay obligations with or
without call or prepayment penalties.
 
                               DECEMBER 31, 1997
                    INVESTMENT SECURITIES HELD TO MATURITY
 
<TABLE>
<CAPTION>
                                                AMORTIZED     FAIR
                                                   COST      VALUE
                                                ---------- ----------
                                                   (IN THOUSANDS)
<S>                                             <C>        <C>
Due in one year or less                         $   89,962 $   89,990
Due after one year through five years              226,931    230,130
Due after five years through ten years              93,822     95,636
Due after ten years                                    511        532
                                                ---------- ----------
Total (excluding mortgage-related securities)      411,226    416,288
                                                ---------- ----------
Mortgage-related securities                        361,298    365,952
                                                ---------- ----------
Total Investment Securities Held to Maturity    $  772,524 $  782,240
                                                ========== ==========
 
                   INVESTMENT SECURITIES AVAILABLE FOR SALE
 
<CAPTION>
                                                AMORTIZED     FAIR
                                                   COST      VALUE
                                                ---------- ----------
                                                   (IN THOUSANDS)
<S>                                             <C>        <C>
Due in one year or less                         $  249,128 $  262,597
Due after one year through five years              287,923    289,219
Due after five years through ten years              20,227     20,169
Due after ten years                                 33,023     38,106
                                                ---------- ----------
Total (excluding mortgage-related securities)      590,301    610,091
                                                ---------- ----------
Mortgage-related securities                      1,536,134  1,557,603
                                                ---------- ----------
Total Investment Securities Available for Sale  $2,126,435 $2,167,694
                                                ========== ==========
</TABLE>
 
Total proceeds and gross realized gains and losses from sale of securities
available for sale for each of the three years ended December 31 were:
 
<TABLE>
<CAPTION>
               1997     1996    1995
              ------- -------- -------
                   (IN THOUSANDS)
<S>           <C>     <C>      <C>
Proceeds      $71,178 $434,145 $20,946
Gross gains     2,462    6,875   1,311
Gross losses       --   17,588       5
</TABLE>
 
Concurrent with the consummation of the merger with FFC, the Corporation
transferred all nonagency mortgage-related securities and an agency security,
with a combined amortized cost of $251.9 million from securities held to
maturity to securities available for sale. These mortgage-related securities
were transferred to maintain the existing interest rate risk position and
credit risk policy of the Corporation.
 
Concurrent with the transfer, the Corporation recorded a $32.5 million pre-tax
charge to earnings relative to one agency security with an amortized cost of
$130.6 million. Management recorded this other than temporary impairment of
value in the fourth quarter of 1997. This security is highly complex,
comprised of multiple cash flows predominated by an inverse floater tied to
libor for which stress tests indicate that the cash flows are volatile in
higher interest rate environments. The estimated fair value of this security
at the time of the other than temporary impairment charge was based on quoted
prices of instruments with similar characteristics and cash flow valuation
techniques.
 
Additionally, the Corporation recorded a $2.8 million pre-tax charge, on other
nonagency mortgage-related securities that were transferred to available for
sale, with an amortized cost of $18.9 million to reflect an other than
temporary impairment of value in the fourth quarter of 1997. These securities
were subsequently sold with no additional loss in January 1998.
 
                                      46
<PAGE>
 
The net unrealized gain on the nonagency mortgage-related securities
transferred to available for sale from held to maturity in 1997 that were not
deemed to have an other than temporary impairment of value was $588,000, which
was credited to stockholders' equity, net of income tax of $206,000.
 
On November 25, 1996, the Corporation sold securities classified as held to
maturity prior to their maturity dates. These securities were sold for $1.3
million which approximated amortized cost. These sales were made due to a
significant deterioration in the issuer's creditworthiness and, therefore,
were not considered to be inconsistent with their original classification.
 
Securities with an amortized cost of approximately $836 million at December
31, 1997 and $668 million at December 31, 1996 were pledged to secure certain
deposits, Federal Home Loan Bank advances, or for other purposes as required
or permitted by law.
 
NOTE 6 LOANS:
 
Loans at December 31 are summarized below:
 
<TABLE>
<CAPTION>
                                     1997       1996
                                  ---------- ----------
                                     (IN THOUSANDS)
<S>                               <C>        <C>
Commercial and financial          $  951,396 $  807,503
Agricultural                          35,443     33,642
Real estate--construction            335,978    235,478
Real estate--mortgage              4,946,263  4,757,410
Installment loans to individuals     793,424    813,875
Lease financing                       14,072     10,449
 
  Total                           $7,076,576 $6,658,357
 
 
</TABLE>
 
A summary of the changes in the allowance for possible loan losses for the
years indicated is as follows:
 
<TABLE>
<CAPTION>
                                   1997      1996      1995
                                 --------  --------  --------
                                       (IN THOUSANDS)
<S>                              <C>       <C>       <C>
Balance at beginning of year     $ 71,767  $ 68,560  $ 65,774
Balance related to acquisitions       728     3,511        --
Charge-offs                       (15,049)  (17,616)  (15,872)
Recoveries                          3,617     3,617     4,629
                                                    ----------
Net charge-offs                   (11,432)  (13,999)  (11,243)
Provision charged to expense       31,668    13,695    14,029
                                                    ----------
Balance at end of year           $ 92,731  $ 71,767  $ 68,560
                                                    ----------
                                                    ----------
</TABLE>
 
Nonaccrual loans totaled $32.4 million and $32.3 million at December 31, 1997
and 1996, respectively.
 
Management has determined that commercial loans and commercial real estate
loans that have a nonaccrual status or have had their terms restructured are
defined as impaired loans. The following table presents data on impaired loans
at December 31:
 
<TABLE>
<CAPTION>
                                                          1997    1996
                                                         ------- -------
                                                         (IN THOUSANDS)
<S>                                                      <C>     <C>
Impaired loans for which an allowance has been provided  $ 2,252 $ 1,920
Impaired loans for which no allowance has been provided   10,652  10,558
                                                                --------
Total loans determined to be impaired                    $12,904 $12,478
                                                                --------
                                                                --------
Required allowance                                       $ 1,206 $ 1,001
                                                                --------
                                                                --------
</TABLE>
 
For the years ended December 31:
 
<TABLE>
<CAPTION>
                                                      1997    1996    1995
                                                     ------- ------- -------
                                                          (IN THOUSANDS)
<S>                                                  <C>     <C>     <C>
Average recorded investment in impaired loans        $13,103 $12,280 $10,668
                                                      ----------------------
                                                      ----------------------
Cash basis interest income recognized from impaired
loans                                                $   650 $   594 $   695
                                                      ----------------------
                                                      ----------------------
</TABLE>
 
                                      47
<PAGE>
 
A summary of loans made by the Corporation's subsidiaries to or for the
benefit of directors and executive officers or their affiliated companies of
the Corporation or its subsidiaries during 1997 is as follows:
 
<TABLE>
<CAPTION>
                                   1997
                              --------------
                              (IN THOUSANDS)
<S>                           <C>
Balance at beginning of year     $ 73,945
New loans                          31,779
Repayments                        (31,234)
Other changes                      (1,629)
                                 --------
Balance at end of year           $ 72,861
                                 ========
</TABLE>
 
The other changes primarily consisted of: loans to companies where an
individual director had a related interest, but as of December 31, 1997, that
individual was no longer a director; loans to directors, or their affiliated
companies, newly elected in 1997; the beginning-of-year balance of loans to
directors, or their affiliated companies, from an acquisition accounted for as
pooling of interests, but not restated.
 
These loans were made on substantially the same terms, including rates and
collateral, if any, as those prevailing at the time for comparable
transactions with other customers, and did not involve more than a normal risk
of collectibility or present other unfavorable features.
 
The Corporation serves the credit needs of its customers by offering a wide
variety of loan programs to customers, primarily in Wisconsin and Illinois.
The loan portfolio is widely diversified by types of borrowers, industry
groups and market areas. Significant loan concentrations are considered to
exist for a financial institution when there are amounts loaned to a multiple
number of borrowers engaged in similar activities that would cause them to be
similarly impacted by economic or other conditions. At December 31, 1997, no
concentrations existed in the Corporation's loan portfolio in excess of 10% of
total loans, or $708 million.
 
Other real estate owned, which is included in other assets, totaled $2.1
million and $1.9 million at December 31, 1997 and 1996, respectively.
 
NOTE 7 LOAN SERVICING RIGHTS:
 
A summary of changes in the balance of mortgage servicing rights is as
follows:
 
<TABLE>
<CAPTION>
                               1997     1996     1995
                              -------  -------  -------
                                  (IN THOUSANDS)
<S>                           <C>      <C>      <C>
Balance at beginning of year  $20,238  $15,634  $ 9,891
 Additions                      9,801    8,867    8,341
 Amortization                  (6,472)  (4,237)  (2,598)
 Sales of servicing rights         --       --       --
 Valuation allowance           (1,032)     (26)      --
                              -------  -------  -------
Balance at end of year        $22,535  $20,238  $15,634
                              =======  =======  =======
</TABLE>
 
At December 31, 1997, the Corporation was servicing 1- to 4-family residential
mortgage loans owned by other investors with balances totaling $4.97 billion
compared with $4.80 billion and $4.37 billion at December 31, 1996 and 1995,
respectively.
 
NOTE 8 PREMISES AND EQUIPMENT:
 
A summary of premises and equipment at December 31 is as follows:
 
<TABLE>
<CAPTION>
                                                   1997       1996
                                                 ---------  ---------
                                                   (IN THOUSANDS)
<S>                                              <C>        <C>
Premises                                         $ 120,570  $ 114,210
Land and land improvements                          26,180     25,358
Furniture and equipment                            102,193     99,022
Leasehold improvements                              11,476     11,717
Less: Accumulated depreciation and amortization   (132,596)  (122,599)
                                                 ---------  ---------
  Total                                          $ 127,823  $ 127,708
                                                 =========  =========
</TABLE>
 
 
                                      48
<PAGE>
 
Depreciation and amortization of premises and equipment totaled $14.2 million
in 1997, $13.2 million in 1996, and $12.8 million in 1995.
 
Third parties provide data processing and management information system
services to the Corporation pursuant to agreements for information technology
services. As of December 31, 1997, the Corporation was engaged in the
renegotiations of agreements with its current primary providers. The current
agreements are in effect through August 1, 2001 and February 28, 1999. The
agreements provide for the delivery of certain information technology services
over the life of the agreements. The agreements call for monthly fixed and
variable fees covering the cost of systems operations and the migration to new
systems. System migration fees are amortized over the life of agreements,
while operational costs are expenses as incurred. Operational costs are
subject to annual adjustment, indexed to changes in the Consumer Price Index
(CPI). The facilities housing the data processing operations are owned by the
Corporation, although remote processing locations are provided by vendors.
Certain data processing and other related equipment is leased on a month-to-
month basis. The costs associated with these contracts are included in the
minimum annual rental and commitment table shown below.
 
The Corporation and certain subsidiaries are obligated under a number of
noncancelable operating leases for other facilities, equipment, and services,
certain of which provide for increased rentals based upon increases in volume,
cost of living adjustments, and other operating costs.
 
The approximate minimum annual rentals and commitments under these
noncancelable agreements and leases with remaining terms in excess of one year
are as follows:
 
<TABLE>
<CAPTION>
            (IN THOUSANDS)
            --------------
<S>         <C>
1998           $12,856
1999             9,030
2000             8,685
2001             5,826
2002             2,229
Thereafter      17,650
               -------
Total          $56,276
               =======
</TABLE>
 
Total rental and service expense under leases and other agreements, net of
sublease income, totaled $21.6 million in 1997, $21.1 million in 1996, and
$20.1 million in 1995.
 
NOTE 9 DEPOSITS:
 
The distribution of deposits at December 31 is as follows:
 
<TABLE>
<CAPTION>
                                        1997       1996
                                     ---------- ----------
                                        (IN THOUSANDS)
<S>                                  <C>        <C>
Noninterest-bearing demand deposits  $  904,710 $  804,020
Interest-bearing demand deposits        736,540    719,682
Savings deposits                      1,012,050  1,046,604
Money market deposits                 1,014,365    834,202
Time deposits                         4,696,472  4,554,790
                                     ---------- ----------
  Total deposits                     $8,364,137 $7,959,298
                                     ========== ==========
</TABLE>
 
                                      49
<PAGE>
 
Time deposits of $100,000 or more were $779.9 million and $765.2 million at
December 31, 1997 and 1996, respectively. Aggregate annual maturities of
certificate accounts at December 31, 1997 are as follows:
 
<TABLE>
<CAPTION>
MATURES
DURING
YEAR END
DECEMBER
31,         (IN THOUSANDS)
- --------    -------------
<S>         <C>
1998         $3,392,741
1999          1,050,804
2000            184,385
2001             39,921
2002             25,837
Thereafter        2,784
             ----------
  Total      $4,696,472
             ==========
</TABLE>
 
NOTE 10 SHORT-TERM BORROWINGS:
 
Short-term borrowings at December 31 are as follows:
 
<TABLE>
<CAPTION>
                                                      1997       1996
                                                   ---------- ----------
                                                      (IN THOUSANDS)
<S>                                                <C>        <C>
Federal funds purchased and securities sold under
agreements to repurchase                           $  712,250 $  666,030
Federal Home Loan Bank advances                       525,317    451,380
Notes payable to banks                                 87,139     68,937
Commercial paper                                        1,250      2,172
Current maturities of long-term borrowings                 --      3,067
Other borrowed funds                                   11,052      9,807
                                                   ---------- ----------
  Total                                            $1,337,008 $1,201,393
                                                   ========== ==========
</TABLE>
 
Commercial paper is issued in maturities not to exceed nine months at the
prevailing market rate at date of issuance. Notes payable to banks are
unsecured borrowings under existing lines of credit. At December 31, 1997, the
Corporation's parent company had $120 million of established lines of credit
with various nonaffiliated banks, of which $87.1 million was outstanding.
Borrowings under these lines accrue interest at short-term market rates and
are payable upon demand or in maturities up to 90 days.
 
Subsidiary banks have collateral pledge agreements whereby they have agreed to
keep on hand at all times, free of all other pledges, liens, and encumbrances,
whole first mortgages on improved residential property with unpaid principal
balances aggregating no less than 167% of all outstanding borrowings from the
Federal Home Loan Bank. Loans totaling approximately $1.1 billion and $1.30
billion were maintained as collateral to secure Federal Home Loan Bank
advances at December 31, 1997, and December 31, 1996, respectively. In
addition, at December 31, 1997, an affiliate bank maintained as collateral to
secure Federal Home Loan Bank advances, $12 million of mortgage-related
securities.
 
Included in short-term Federal Home Loan Bank advances are callable notes that
have original maturities exceeding one year. However, these notes have one-
year call premiums, which the Corporation expects to be called.
 
                                      50
<PAGE>
 
NOTE 11 LONG-TERM BORROWINGS:
 
Long-term borrowings at December 31 are as follows:
 
<TABLE>
<CAPTION>
                                                          1997    1996
                                                         ------- -------
                                                         (IN THOUSANDS)
<S>                                                      <C>     <C>
Parent company:
 8.6% senior unsecured notes                             $    -- $   400
 9.35% subordinated capital note                              --   2,667
                                                         ------- -------
Subsidiaries:
 Federal Home Loan Bank, 4.84% to 7.63% maturing in 1999
 through 2004                                              5,882  21,698
 Industrial development revenue bonds, 6.40% to 7.25%      5,900   6,015
 Collateralized mortgage obligations                       3,488   5,616
Less: Current maturities of long-term borrowings              --  (3,067)
                                                         ------- -------
  Total                                                  $15,270 $33,329
                                                         ======= =======
</TABLE>
 
The table below summarizes the maturities of the Corporation's long-term
borrowings:
 
<TABLE>
<CAPTION>
YEAR                                        (IN THOUSANDS)
- ----                                        -------------
<S>                                         <C>
1998                                           $    --
1999                                             4,010
2000                                             2,090
2001                                               735
2002                                               140
Thereafter                                       8,295
                                               -------
Total                                           15,270
Current maturities of long-term borrowings          --
                                               -------
Total long-term borrowings                     $15,270
                                               =======
</TABLE>
 
The industrial revenue bonds are payable in seven annual installments ranging
from $120,000 to $150,000 with additional payments of $1,910,000 and
$3,320,000 due October 1, 2012 and 2021, respectively. Interest is payable
semi-annually. The bonds were used to refinance an apartment project which was
previously sold. The bonds are collateralized by mortgage-backed securities
with a carrying value and fair value of $8,093,000 and $8,302,000,
respectively, at December 31, 1997. FFB has a loan receivable from the buyer
of $5,669,000 at December 31, 1997, which is secured by a first mortgage on
the apartment project.
 
UFS Capital Corporation and FFS Funding Corporation, wholly-owned finance
subsidiaries of FFB, have issued the collateralized mortgage obligations.
Principal repayments are scheduled in varying amounts through January, 2003.
The obligations are collateralized by mortgage-backed securities held by UFS
Capital Corporation with a carrying value of $6,847,000, and a fair value of
$7,088,000 at December 31, 1997.
 
In January 1996, FFC redeemed all of its outstanding 8% subordinated notes due
November 1999, which aggregated $54,925,000 at the date of redemption. The
after-tax cost of $686,000 associated with the redemption has been reported as
an extraordinary charge in 1996.
 
NOTE 12 STOCKHOLDERS' EQUITY:
 
On March 17, 1997, the Corporation distributed 3.7 million shares of common
stock in connection with a 6-for-5 stock split effected in the form of a 20%
stock dividend. Additionally, on October 29, 1997, the Corporation issued 27.8
million shares in connection with the merger with FFC.
 
The Corporation's Articles of Incorporation authorize the issuance of 750,000
shares of preferred stock at a par value of $1.00 per share. No shares have
been issued.
 
At December 31, 1997, subsidiary net assets equaled $746.1 million, of which
approximately $131.0 million could be transferred to the Corporation in the
form of cash dividends without prior regulatory approval, subject to the
capital needs of each subsidiary.
 
                                      51
<PAGE>
 
The Corporation has an Incentive Stock Option Plan that provides for the
granting of options to key employees to purchase common stock at a price at
least equal to the fair market value of the stock on the date of grant. The
options granted are for a ten-year term and may be exercised at any time
during this period. As of December 31, 1997, 11,107 shares remain available
for granting. No options have been granted from this plan since 1985.
 
In January 1997, the Board of Directors, with subsequent approval of the
Corporation's shareholders approved an amendment, increasing the number of
shares available to be issued by an additional 720,000 shares, to the Restated
Long-Term Incentive Stock Plan ("Stock Plan"). The Stock Plan was adopted by
the Board of Directors and originally approved by shareholders in 1987 and
amended in 1994. Options are generally exercisable up to 10 years from the
date of grant and vest over two to three years. As of December 31, 1997,
865,278 shares remain available for grants.
 
The stock incentive plans of acquired companies were terminated at each
respective merger date. Option holders under such plans received the
Corporation's common stock, or options to buy the Corporation's common stock,
based on the conversion terms of the various merger agreements. The historical
option information presented below has been restated to reflect the options
originally granted under the acquired companies' plans.
 
<TABLE>
<CAPTION>
                                          WEIGHTED
                                           AVERAGE
                              OPTIONS     EXERCISE
                            OUTSTANDING     PRICE     EXERCISABLE
                            -------------------------------------
<S>                         <C>         <C>           <C>
Balance, December 31, 1994   2,530,054  $ 3.24-$21.83  1,265,756
Granted                        327,893   16.47- 24.17    124,675
Exercised                     (639,933)   4.04- 24.17         --
Forfeited                      (18,942)  19.28- 24.17         --
<CAPTION>
                            -------------------------------------
<S>                         <C>         <C>           <C>
Balance, December 31, 1995   2,199,072  $ 3.24-$24.17  1,390,431
<CAPTION>
                            -------------------------------------
<S>                         <C>         <C>           <C>
Granted                        363,864   21.70- 30.73     66,843
Exercised                     (383,575)   3.24- 24.17         --
Forfeited                      (23,090)  10.45- 30.73         --
<CAPTION>
                            -------------------------------------
<S>                         <C>         <C>           <C>
Balance, December 31, 1996   2,156,271  $ 3.24-$30.73  1,457,274
<CAPTION>
                            -------------------------------------
<S>                         <C>         <C>           <C>
Granted                        253,770   35.21- 40.72         --
Exercised                     (486,702)   3.39- 30.73         --
Forfeited                       (6,444)  15.42- 35.21         --
<CAPTION>
                            -------------------------------------
<S>                         <C>         <C>           <C>
Balance, December 31, 1997   1,916,895  $ 3.24-$40.72  1,457,274
<CAPTION>
                            =====================================
</TABLE>
 
Share and price information has been adjusted to reflect the March 17, 1997,
6-for-5 stock split effected as a 20% stock dividend.
 
The following table summarizes information about the Corporation's stock
option's outstanding at December 31, 1997:
 
<TABLE>
<CAPTION>
                                         WEIGHTED                                WEIGHTED
                            OPTIONS      AVERAGE      REMAINING     GRANTS       AVERAGE
                          OUTSTANDING EXERCISE PRICE LIFE (YEARS) EXERCISABLE EXERCISE PRICE
                          ------------------------------------------------------------------
<S>                       <C>         <C>            <C>          <C>         <C>
Range of Exercise Price:
 $ 3.24-$ 4.38                65,277      $ 3.51         2.51         65,277      $ 3.51
 $ 5.12-$ 6.67                53,563        6.42         4.15         53,563        6.42
 $ 8.37-$10.45               637,938        9.99         4.34        637,938        9.99
 $14.25-$21.36               368,664       19.94         5.66        363,406       19.98
 $21.70-$30.73               539,484       25.87         7.25        337,090       24.38
 Greater than $35.21         251,969       35.31         9.09             --          --
<CAPTION>
                          ------------------------------------------------------------------
<S>                       <C>         <C>            <C>          <C>         <C>
  TOTAL                    1,916,895      $19.38         5.97      1,457,274      $15.39
<CAPTION>
                          ==================================================================
</TABLE>
 
 
                                      52
<PAGE>
 
The Corporation applies APB Opinion No. 25 in accounting for the Stock Plan
and, accordingly, compensation cost based on fair value at grant date has not
been recognized for its stock options in the consolidated financial statements
during the three years ended December 31, 1997. Had the Corporation determined
the compensation cost based on the fair value at grant date for its stock
options under SFAS No. 123, "Accounting for Stock-Based Compensation", the
Corporation's net income would have been reduced to the pro forma amounts
indicated below:
 
<TABLE>
<CAPTION>
                                                  FOR THE YEARS ENDED DECEMBER
                                                               31,
                                                 -------------------------------------
                                                  1997           1996           1995
                                                 -------       --------       --------
                                                         (IN THOUSANDS)
<S>                            <C>               <C>           <C>            <C>
Net Income                     As Reported       $52,359       $107,016       $112,011
                               Pro Forma         $51,179       $106,293       $111,551
Basic Earnings Per Share       As Reported       $  1.04       $   2.12       $   2.28
                               Pro Forma         $  1.02       $   2.10       $   2.27
Diluted Earnings Per Share     As Reported       $  1.02       $   2.08       $   2.24
                               Pro Forma         $  1.00       $   2.06       $   2.23
</TABLE>
 
Pro Forma net income reflects only options granted in 1997, 1996 and 1995.
Therefore, the full impact of calculating compensation cost for stock options
under SFAS No. 123 is not reflected in the pro forma net income amounts
presented above because compensation cost is reflected over the options'
graded vesting period and compensation cost for options granted prior to
January 1, 1995, is not considered. However, the annual expense allocation
methodology prescribed by SFAS No. 123 attributes a higher percentage of the
reported expense to earlier years than to later years, resulting in an
accelerated expense recognition.
 
The fair value of each option granted is estimated on the grant date using the
Black-Scholes option-pricing model. The following assumptions were used in
estimating the fair value for options granted in 1997, 1996 and 1995:
 
<TABLE>
<CAPTION>
                                 1997    1996    1995
                                ------  ------  ------
<S>                             <C>     <C>     <C>
Dividend yield                    2.10%   3.00%   2.70%
Risk free interest rate           6.47%   5.46%   7.65%
Weighted average expected life  7 yrs.  7 yrs.  7 yrs.
Expected volatility              19.64%  20.49%  21.54%
</TABLE>
 
The weighted average per share fair values of options granted in 1997, 1996
and 1995 were $10.01, $6.92 and $6.99, respectively.
 
                                      53
<PAGE>
 
NOTE 13 RETIREMENT PLAN:
 
The Corporation has a noncontributory defined benefit retirement plan covering
substantially all full-time employees. The benefits are based primarily on
years of service and the employee's compensation paid while a participant in
the plan. The Corporation's funding policy is consistent with the funding
requirements of federal law and regulations. Plan assets are actively managed
by investment professionals.
 
The following table sets forth the plan's funded status at December 31:
 
<TABLE>
<CAPTION>
                                                    1997      1996      1995
                                                  --------  --------  --------
                                                        (IN THOUSANDS)
<S>                                               <C>       <C>       <C>
Actuarial present value of accumulated benefit
obligations:
  Vested                                          $(23,940) $(20,103) $(19,471)
  Nonvested                                         (1,983)   (1,829)   (1,888)
                                                        -----------------------
Total                                             $(25,923) $(21,932) $(21,359)
                                                        -----------------------
Projected benefit obligation                      $(27,058) $(22,823) $(22,362)
Plan assets at fair value, primarily marketable
securities                                          30,085    24,783    21,778
                                                        -----------------------
Plan assets in excess of (less than) projected
benefit obligation                                   3,027     1,960      (584)
Unrecognized net asset                              (1,759)   (1,955)   (2,150)
Unrecognized prior service cost                        483       314       334
Unrecognized gain                                   (5,700)   (3,615)   (1,639)
                                                        -----------------------
Accrued pension liability                         $ (3,949) $ (3,296) $ (4,039)
                                                        -----------------------
                                                        -----------------------
Net periodic pension costs include the following
components:
Service cost-benefits earned during the period    $  1,582  $  1,465  $  1,308
Interest cost on projected benefit obligation        1,729     1,593     1,622
Actual return on assets                             (6,131)   (2,824)   (4,515)
Net amortization and deferral                        4,144     1,048     2,856
                                                        -----------------------
Net periodic pension expense                      $  1,324  $  1,282  $  1,271
                                                        -----------------------
                                                        -----------------------
Assumptions used in expense calculations were:
Discount rates                                        7.50%     7.00%     8.00%
Rates of increase in compensation levels              5.00%     5.00%     5.00%
Expected long-term rate of return on assets           9.00%     9.00%     9.00%
                                                        -----------------------
</TABLE>
 
Assumptions used for the December 31, 1997 liability included a discount rate
of 7.00% and a 5.00% increase in compensation levels.
 
The Corporation and its subsidiaries, excluding FFC, also have a Profit
Sharing/Retirement Savings Plan. Total expense related to contributions to the
plan was $4.5 million, $4.4 million, and $3.7 million in 1997, 1996, and 1995,
respectively.
 
The profit sharing contribution is determined annually by the Administrative
Committee of the Board of Directors. The formula is based on the return on
average equity of each affiliate and the Corporation.
 
FFC has a noncontributory defined benefit retirement plan covering
substantially all Illinois-based employees. The benefits are based primarily
on years of service and the employee's compensation paid while a participant
in the plan. The Corporation's funding policy is consistent with the funding
requirements of federal law and regulations. Plan assets are actively managed
by investment professionals. This plan was merged into the Corporation's plan
on January 1, 1998.
 
                                      54
<PAGE>
 
The following table sets forth the plan's funded status at December 31:
 
<TABLE>
<CAPTION>
                                                  1997     1996     1995
                                                 -------  -------  -------
                                                     (IN THOUSANDS)
<S>                                              <C>      <C>      <C>      <C>
Actuarial present value of accumulated benefit
obligations:
 Vested                                          $(3,281) $(2,936) $(2,971)
 Nonvested                                          (698)    (491)    (155)
                                                 -------------------------
Total                                            $(3,979) $(3,427) $(3,126)
                                                 =========================
Projected benefit obligation                     $(4,086) $(3,530) $(3,238)
Plan assets at fair value, primarily marketable
securities                                         4,145    4,080    4,143
                                                 -------------------------
Plan assets in excess of (less than) projected
benefit obligation                                    59      550      905
Unrecognized net asset                              (919)  (1,047)  (1,175)
Unrecognized prior service cost                      180      190      201
Unrecognized loss                                    646      480      500
                                                 -------------------------
Accrued pension liability (receivable)           $   (34) $   173  $   431
                                                 =========================
Net periodic pension costs include the
following components:
Service cost-benefits earned during the period   $   374  $   363  $   291
Interest cost on projected benefit obligation        286      256      240
Actual return on assets                             (554)    (319)    (765)
Net amortization and deferral                        101     (140)     357
                                                 -------------------------
Net periodic pension expense                     $   207  $   160  $   123
                                                 =========================
Assumptions used in expense calculations were:
Discount rates                                      7.50%    7.25%    8.25%
Rates of increase in compensation levels            5.00%    5.00%    5.00%
Expected long-term rate of return on assets         8.50%    8.50%    8.50%
                                                 ------------------------------
</TABLE>
 
Assumptions used for the December 31, 1997 liability included a discount rate
of 7.00% and a 5.00% increase in compensation levels.
 
FFC also has a defined-contribution profit sharing plan covering all full-time
employees who have completed one year of service and are at least twenty-one
years old. Corporate contributions are discretionary. Total expense related to
contributions to the plan was $3.5 million, $2.1 million, and $0 in 1997,
1996, and 1995, respectively. This plan was merged into the Corporation's plan
on January 1, 1998.
 
FFC sponsored a supplemental executive retirement plan for certain executive
officers, which is partially funded through life insurance and provides
additional benefit at retirement, and an unfunded defined benefit retirement
plan for all outside directors. FFC also entered into employment agreements
with certain executive officers. As a result of the merger with the
Corporation, FFC recorded a charge of $11.7 million for the year ended
December 31, 1997 to terminate the plans and employment agreements. This
charge is included in the Corporation's merger, integration and other one-time
charges as described in Note 3. Expense for the supplemental retirement plan
and defined-benefit retirement plan for outside directors was $480,000 and
$341,000 for the years ended December 31, 1996 and 1995, respectively.
 
                                      55
<PAGE>
 
NOTE 14 INCOME TAX EXPENSE:
 
The current and deferred amounts of income tax expense (benefit) are as
follows:
 
<TABLE>
<CAPTION>
                                      YEARS ENDED DECEMBER 31,
                                      --------------------------
                                        1997     1996     1995
                                      --------  -------  -------
                                           (IN THOUSANDS)
      <S>                             <C>       <C>      <C>
      Current:
       Federal                        $ 75,238  $55,660  $59,350
       State                             9,624    6,169    9,205
                                      --------------------------
      Total current                     84,862   61,829   68,555
                                      --------------------------
      Deferred:
       Federal                         (17,860)  (2,875)  (4,218)
       State                            (3,093)  (1,467)  (1,956)
                                      --------------------------
      Total deferred                   (20,953)  (4,342)  (6,174)
                                      --------------------------
      Total income tax expense          63,909   57,487   62,381
                                      --------------------------
      Extraordinary item                   --      (370)     --
                                      --------------------------
      Total after extraordinary item  $ 63,909  $57,117  $62,381
                                      ==========================
</TABLE>
 
Temporary differences between the amounts reported in the financial statements
and the tax bases of assets and liabilities resulted in deferred taxes.
Deferred tax assets and liabilities at December 31 are as follows:
 
<TABLE>
<CAPTION>
                                                             1997     1996
                                                           --------  -------
                                                            (IN THOUSANDS)
<S>                                                        <C>       <C>
Gross deferred tax assets:
 Allowance for possible loan losses                        $ 36,463  $27,891
 Accrued liabilities                                         13,025    2,044
 Accrued pension expense                                      1,325    1,325
 Deferred compensation                                        6,554    4,988
 Securities valuation adjustment                             17,532    3,511
 Deposit base intangible amortization                         3,409    4,053
 Benefit of tax loss carryforwards                           14,420    9,225
 Other                                                        4,065    3,008
                                                           -----------------
Total gross deferred tax assets                              96,793   56,045
Valuation adjustment for deferred tax assets                (22,276)  (4,024)
                                                           -----------------
                                                             74,517   52,021
Gross deferred tax liabilities:
 Premises and equipment                                       3,723    4,005
 Deferred loan fee income and other loan yield adjustment     2,527    1,487
 FHLB bank stock dividend                                     1,059    1,059
 State income taxes                                           1,740    1,633
 Other                                                        2,594    1,916
                                                           -----------------
Total gross deferred tax liabilities                         11,643   10,100
                                                           -----------------
Net deferred tax assets                                      62,874   41,921
                                                           -----------------
Tax effect of unrealized gain related to available for
sale securities                                             (14,938)  (4,884)
                                                           -----------------
Net deferred tax assets including unrealized gain related
to available for sale securities                           $ 47,936  $37,037
                                                           =================
</TABLE>
 
Components of the 1996 deferred tax assets have been adjusted to reflect the
filing of corporate income tax returns.
 
                                      56
<PAGE>
 
For financial reporting purposes, a valuation allowance has been recognized to
offset deferred tax assets related to state net operating loss carryforwards
of a subsidiary and other temporary differences. When realized, the tax
benefit for these items will be used to reduce current tax expense for that
period.
 
The effective income tax rate differs from the statutory federal tax rate. The
major reasons for this difference are as follows:
 
<TABLE>
<CAPTION>
                                                       1997  1996  1995
                                                       ----  ----  ----
<S>                                                    <C>   <C>   <C>
Federal income tax rate at statutory rate              35.0% 35.0% 35.0%
Increases (decreases) resulting from:
 Tax-exempt interest and dividends                     (2.9) (2.0) (1.5)
 State income taxes (net of federal income taxes)       3.3   1.8   2.7
 Merger, integration and other one-time charges         3.4    --    --
 Change in valuation allowance for deferred tax assets 15.7    --    --
 Other                                                  0.5   0.1  (0.4)
                                                                  ------
Effective income tax rate                              55.0% 34.9% 35.8%
                                                                  ------
                                                                  ------
</TABLE>
 
As of December 31, 1997, the Corporation had approximately $4.2 million of
purchased net operating loss carryforwards available to reduce federal tax
liability through the year 2009. Utilization of the net operating loss
carryforwards is reflected as a charge in lieu of current tax expense and
recorded in the consolidated statements of financial condition as a reduction
to goodwill. In addition, the Corporation has net operating loss carryforwards
for state income tax purposes of $97.0 million, which are available to offset
future state taxable income, if any, through 2012.
 
FFB qualified under provisions of the Internal Revenue Code that permitted it
to deduct from taxable income an allowance for bad debts that differed from
the provision for such losses charged to income for financial reporting
purposes. Accordingly, no provision for income taxes has been made for
$79,243,000 of retained income at December 31, 1997. If income taxes had been
provided, the deferred tax liability would have been approximately
$31,804,000.
 
NOTE 15 COMMITMENTS AND CONTINGENT LIABILITIES:
 
COMMITMENTS AND LETTERS OF CREDIT
 
The Corporation 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 reduce its own exposure to interest rate risk. These
financial instruments include commitments to extend credit, commercial letters
of credit, standby letters of credit and financial guarantees, and interest
rate swaps.
 
The Corporation's exposure to credit loss in the event of nonperformance by
the other party to the financial instrument for commitments to extend credit,
commercial letters of credit, and standby letters of credit and financial
guarantees written is represented by the contractual amount of those
instruments. The Corporation uses the same credit policies in making
commitments and conditional obligations as it does for on-balance-sheet
instruments.
 
The following is a summary of financial instruments with off-balance sheet
risk at December 31:
 
<TABLE>
<CAPTION>
                                                            1997       1996
                                                         ---------- ----------
                                                            (IN THOUSANDS)
<S>                                                      <C>        <C>
Financial instruments whose contract amounts represent
credit risk:
 Commitments to extend credit                            $2,459,154 $2,265,225
 Commercial letters of credit                                 3,981      3,489
 Standby letters of credit and financial guarantees
 written                                                     95,410     52,287
Financial instruments whose notional or contract amount
exceeds the amount of credit risk:
 Interest rate swap agreements                                3,300      3,400
 Futures                                                     70,500         --
Loans sold with recourse                                     12,000     27,000
</TABLE>
 
                                      57
<PAGE>
 
Commitments to extend credit are agreements to lend funds to a customer as
long as there is no violation of any condition established in 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. The Corporation evaluates each
customer's creditworthiness on a case-by-case basis. The amount of collateral
obtained, if deemed necessary by the Corporation upon extension of credit, is
based on management's credit evaluation of the customer. Collateral held
varies but may include accounts receivable, inventory, property, plant,
equipment, securities, certificates of deposit and income producing commercial
properties.
 
A letter of credit is a document issued by the Corporation on behalf of its
customer (the account party) authorizing a third party (the beneficiary), or
in special cases the account party, to draw drafts on the Corporation up to a
stipulated amount and with specified terms and conditions. The letter of
credit is a conditional commitment (except when prepaid by the account party)
on the part of the Corporation to provide payment on drafts drawn in
accordance with the terms of the document.
 
A commercial letter of credit is issued specifically to facilitate trade or
commerce. Under the terms of a commercial letter of credit, as a general rule,
drafts will be drawn when the underlying transaction is consummated as
intended.
 
A standby letter of credit is a letter of credit or similar arrangement that
represents an obligation on the part of the Corporation to a designated third
party (the beneficiary) contingent upon the failure of the Corporation's
customer (the account party) to perform under the terms of the underlying
contract with the beneficiary, or obligates the Corporation to guarantee or
stand as surety for the benefit of a third party to the extent permitted by
law or regulation.
 
The underlying contract may entail either financial or nonfinancial
undertakings of the account party with the beneficiary. The underlying
contract may involve such things as the customer's payment of commercial
paper, delivery of merchandise, completion of a construction contract or
repayment of the account party's obligations to the beneficiary. Under the
terms of a standby letter, as a general rule, drafts will be drawn only when
the underlying event fails to occur as intended.
 
The credit risk involved in issuing letters of credit is essentially the same
as that involved in extending loans to customers.
 
The Corporation enters into various interest rate swaps in managing its
interest rate risk. In these swaps, the Corporation agrees to exchange, at
specified intervals, the difference between fixed- and floating-interest
amounts calculated on an agreed-upon notional principal amount. At December
31, 1997 and 1996, $3.3 million and $3.4 million, respectively of "pay-fixed"
swaps were in effect converting a fixed rate commercial loan to a variable
rate.
 
The Corporation's current credit exposure on swaps is limited to the value of
interest rate swaps that have become favorable to the Corporation. At December
31, 1997, the market value of interest rate swaps was a positive $14,000.
 
If an interest rate swap that is used to manage interest rate risk is
terminated early, any resulting gain or loss is deferred and accreted or
amortized to noninterest income or expense over the remaining life of the
asset related to the terminated agreement.
 
Deferred gains totaling $107,000 at December 31, 1997, resulting from interest
rate swaps terminated during 1994 with notional amounts of $19.8 million, are
included in other liabilities and will be recognized as part of interest
income in the following periods: $97,000 in 1998, and $10,000 in 1999.
 
The Corporation enters into various interest rate futures contracts to hedge
specific investment securities. These contracts are commitments to either
purchase or sell a financial instrument at a specified price on an agreed-upon
future date. In November 1997, the Corporation hedged certain agency issued
zero-coupon bonds held by FFC, with a carrying value of $37.2 million and a
market value of $41.6 million, by executing various interest rate futures
contracts. These contracts had a notional value of $70.5 million and a
maturity date of March 1998. Initial margin requirements on the futures
contracts are provided by
 
                                      58
<PAGE>
 
investment securities provided as collateral. Unrealized losses, net of tax,
of $924,000 on the futures contracts outstanding have been recorded as a
component of the net unrealized gain on securities available for sale at
December 31, 1997. Subsequently, in January 1998, the futures contracts were
closed and the zero-coupon bonds were sold. A net gain of $5.1 million will be
recognized, in investment securities gains, in the first quarter of 1998 from
these transactions.
 
All loans currently sold to others are sold on a nonrecourse basis with the
servicing rights of these loans retained by the Corporation. At December 31,
1997 and 1996, $12 million and $27 million, respectively, of the serviced
loans were previously sold with recourse, the majority of which is either
federally-insured or federally-guaranteed.
 
LEGAL
 
There are legal proceedings pending against certain subsidiaries of the
Corporation in the ordinary course of their business. Although litigation is
subject to many uncertainties and the ultimate exposure with respect to these
matters cannot be ascertained, management believes, based upon discussions
with counsel, that the Corporation has meritorious defenses, and any ultimate
liability would not have a material adverse affect on the consolidated
financial position of the Corporation.
 
                                      59
<PAGE>
 
NOTE 16 PARENT COMPANY FINANCIAL INFORMATION:
 
Presented below are condensed statements of financial condition, income and
cash flows for the Parent Company:
 
                       STATEMENTS OF FINANCIAL CONDITION
 
<TABLE>
<CAPTION>
                                              1997     1996
                                            -------- --------
                                             (IN THOUSANDS)
<S>                                         <C>      <C>
ASSETS
Cash and due from banks                     $      5 $    309
Notes receivable from subsidiaries           138,897  110,992
Investment in subsidiaries                   746,081  752,387
Other assets                                  41,939   26,904
 
Total assets                                $926,922 $890,592
 
 
LIABILITY AND STOCKHOLDERS' EQUITY
Short-term borrowings                       $ 88,389 $ 74,176
Accrued expenses and other liabilities        24,840   12,854
 
Total liabilities                            113,229   87,030
Stockholders' equity                         813,693  803,562
 
Total liabilities and stockholders' equity  $926,922 $890,592
 
 
</TABLE>
 
                              STATEMENTS OF INCOME
 
<TABLE>
<CAPTION>
                                                     FOR THE YEARS ENDED
                                                        DECEMBER 31,
                                                  ---------------------------
                                                   1997      1996      1995
                                                  -------  --------  --------
                                                       (IN THOUSANDS)
<S>                                               <C>      <C>       <C>
INCOME
Dividends from subsidiaries                       $63,355  $ 51,283  $ 30,467
Management and service fees from subsidiaries       4,685     4,267     3,963
Interest income on notes receivable                 7,615     6,088     4,562
Other income                                          514       234       267
                                                    --------------------------
Total income                                       76,169    61,872    39,259
                                                    --------------------------
EXPENSE
Interest expense on borrowed funds                  4,634     4,449     3,593
Salaries and employee benefits                      3,871     3,287     3,331
Merger, integration and other one-time charges     20,837        --        --
Other expense                                       5,203     5,030     4,931
                                                    --------------------------
Total expense                                      34,545    12,766    11,855
                                                    --------------------------
Income before income tax benefit and equity in
undistributed income                               41,624    49,106    27,404
Income tax benefit                                 (6,155)     (547)     (663)
                                                    --------------------------
Income before equity in undistributed net income
of subsidiaries                                    47,779    49,653    28,067
Equity in undistributed net income of
subsidiaries                                        4,580    57,363    83,944
                                                    --------------------------
Net income                                        $52,359  $107,016  $112,011
                                                    --------------------------
                                                    --------------------------
</TABLE>
 
 
                                       60
<PAGE>
 
                            STATEMENTS OF CASH FLOWS
 
<TABLE>
<CAPTION>
                                                     FOR THE YEARS ENDED
                                                         DECEMBER 31,
                                                  ----------------------------
                                                    1997      1996      1995
                                                  --------  --------  --------
                                                        (IN THOUSANDS)
<S>                                               <C>       <C>       <C>
OPERATING INCOME
Net income                                        $ 52,359  $107,016  $112,011
Adjustments to reconcile net income to net cash
provided by operating activities:
 Equity in undistributed net income of
 subsidiaries                                       (4,580)  (57,363)  (83,944)
 Depreciation and other amortization                   161       135       199
 Amortization of intangibles                           446       805       871
 Loss (gain) on sales of assets, net                  (356)       --         2
 (Increase) decrease in interest receivable and
 other assets                                      (10,714)      599    (7,488)
 Increase (decrease) in interest payable and
 other liabilities                                  12,080      (252)    1,290
 Other, net                                             --      (154)      (30)
                                                  ----------------------------
Net cash provided by operating activities           49,396    50,786    22,911
                                                  ----------------------------
INVESTING ACTIVITIES
Proceeds from sales of investment securities           357        --        --
Purchases of investment securities                      --        --      (780)
Net increase in notes receivable                   (16,335)  (12,374)  (32,547)
Purchase of premises and equipment, net of
disposals                                             (176)      (82)      (81)
Capital contribution to subsidiaries                    --    (9,200)     (500)
                                                  ----------------------------
Net cash used by investing activities              (16,154)  (21,656)  (33,908)
                                                  ----------------------------
FINANCING ACTIVITIES
Net increase (decrease) in short-term borrowings    14,213    (8,546)   30,165
Cash dividends                                     (49,328)  (20,278)  (16,924)
Proceeds from exercise of stock options              5,168     1,476     1,454
Purchase of treasury stock                          (3,599)   (3,101)   (2,085)
                                                  ----------------------------
Net cash provided (used) by financing activities   (33,546)  (30,449)   12,610
                                                  ----------------------------
Net increase (decrease) in cash and cash
equivalents                                           (304)   (1,319)    1,613
Cash and due from banks at beginning of year           309     1,628        15
                                                  ----------------------------
Cash and due from banks at end of year            $      5  $    309  $  1,628
                                                  ============================
</TABLE>
 
                                       61
<PAGE>
 
NOTE 17 FAIR VALUE OF FINANCIAL INSTRUMENTS:
 
SFAS No. 107, "Disclosures about Fair Value of Financial Instruments,"
requires that the Corporation disclose estimated fair values for its financial
instruments. Fair value estimates, methods, and assumptions are set forth
below for the Corporation's financial instruments.
 
The estimated fair values of the Corporation's financial instruments at
December 31 are as follows:
 
<TABLE>
<CAPTION>
                                       1997                                1996
- ----------------------------------------------------------------------------------------------
                         CONTRACT OR                         CONTRACT OR
                          NOTIONAL    CARRYING                NOTIONAL    CARRYING
                           AMOUNT      AMOUNT    FAIR VALUE    AMOUNT      AMOUNT   FAIR VALUE
- ----------------------------------------------------------------------------------------------
                                                   (IN THOUSANDS)
<S>                      <C>         <C>         <C>         <C>         <C>        <C>
Financial assets:
 Cash and due from banks             $  288,021  $  288,021              $  369,842 $  369,842
 Interest-bearing
 deposits in other
 financial institutions                   4,154       4,154                   3,183      3,183
 Federal funds sold and
 securities purchase
 under agreements to
 resell                                  11,511      11,511                  27,977     27,977
 Investment securities:
  Held to maturity                      772,524     782,240               1,079,749  1,074,412
  Available for sale                  2,167,694   2,167,694               1,674,189  1,674,189
 Loans held for sale                    114,001     114,001                  42,490     42,490
 Loans                                7,076,576   7,109,315               6,658,357  6,652,466
Financial liabilities:
 Deposits                             8,364,137   8,378,493               7,959,298  7,940,967
 Short-term borrowings                1,337,008   1,337,008               1,201,393  1,201,393
 Long-term borrowings                    15,270      15,387                  33,329     34,011
Off balance sheet:
 Interest swap
 agreements                $ 3,300            2          14    $3,400             2         36
 Futures contracts          70,500       (1,421)     (1,421)       --            --         --
                         ---------------------------------------------------------------------
</TABLE>
 
CASH AND DUE FROM BANKS, INTEREST-BEARING DEPOSITS IN OTHER FINANCIAL
INSTITUTIONS, AND FEDERAL FUNDS SOLD AND SECURITIES PURCHASED UNDER AGREEMENTS
TO RESELL
 
For these short-term instruments, the carrying amount is a reasonable estimate
of fair value.
 
INVESTMENT SECURITIES HELD TO MATURITY, INVESTMENT SECURITIES AVAILABLE FOR
SALE, AND TRADING ACCOUNT SECURITIES
 
The fair value of investment securities held to maturity, investment
securities available for sale, and trading account securities, except certain
state and municipal securities, is estimated based on bid prices published in
financial newspapers or bid quotations received from securities dealers. The
fair value of certain state and municipal securities is not readily available
through market sources other than dealer quotations, so fair value estimates
are based on quoted market prices of similar instruments, adjusted for
differences between the quoted instruments and the instruments being valued.
 
LOANS HELD FOR SALE
 
Fair value is estimated using the prices of the Corporation's existing
commitments to sell such loans and/or the quoted market prices for commitments
to sell similar loans.
 
LOANS
 
Fair values are estimated for portfolios of loans with similar financial
characteristics. Loans are segregated by type such as commercial, commercial
real estate, residential mortgage, credit card and other consumer.
 
                                      62
<PAGE>
 
The fair value of other types of loans is estimated by discounting the future
cash flows using the current rates at which similar loans would be made to
borrowers with similar credit ratings and for similar maturities. Future cash
flows are also adjusted for estimated reductions or delays due to
delinquencies, nonaccruals or potential charge-offs.
 
DEPOSITS
 
Under SFAS No. 107, the fair value of deposits with no stated maturity such as
noninterest-bearing demand deposits, savings, NOW accounts and money market
accounts, is equal to the amount payable on demand as of December 31. The fair
value of certificates of deposit is based on the discounted value of
contractual cash flows. The discount rate is estimated using the rates
currently offered for deposits of similar remaining maturities.
 
SHORT-TERM BORROWINGS
 
For these short-term instruments, the carrying amount is a reasonable estimate
of fair value.
 
LONG-TERM BORROWINGS
 
Rates currently available to the Corporation for debt with similar terms and
remaining maturities are used to estimate fair value of existing borrowings.
 
COMMITMENTS TO EXTEND CREDIT, COMMERCIAL LETTERS OF CREDIT, STANDBY LETTERS OF
CREDIT AND FINANCIAL GUARANTEES WRITTEN
 
Fair values for commitments to extend credit, commercial letters of credit,
standby letters of credit and financial guarantees written are based on fees
currently charged to enter into similar agreements, taking into account the
remaining terms of the agreements, the counterparties' credit standing and
discounted cash flow analyses. The fair value of these off-balance-sheet items
approximates the recorded amounts of the related fees and is not material at
December 31, 1997 and 1996.
 
INTEREST RATE SWAP AGREEMENTS AND FUTURES CONTRACTS
 
The fair value of interest rate swap agreements and futures contracts are
obtained from dealer quotes. These values represent the estimated amount the
Corporation would receive or pay to terminate the contracts or agreements,
taking into account current interest rates and, when appropriate, the current
creditworthiness of the counter-parties.
 
LIMITATIONS
 
Fair value estimates are made at a specific point in time, based on relevant
market information and information about the financial instrument. These
estimates do not reflect any premium or discount that could result from
offering for sale at one time the Corporation's entire holdings of a
particular financial instrument. Because no market exists for a significant
portion of the Corporation's financial instruments, fair value estimates are
based on judgments regarding future expected loss experience, current economic
conditions, risk characteristics of various financial instruments and other
factors. These estimates are subjective in nature and involve uncertainties
and matters of significant judgment and therefore cannot be determined with
precision. Changes in assumptions could significantly affect the estimates.
 
                                      63
<PAGE>
 
NOTE 18 SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED):
 
The following is selected financial data summarizing the results of operations
for each quarter in the years ended December 31, 1997 and 1996:
 
<TABLE>
<CAPTION>
                                               1997 QUARTER ENDED
                                   --------------------------------------------
                                   MARCH 31  JUNE 30   SEPTEMBER 30 DECEMBER 31
                                   --------  --------  ------------ -----------
                                      (IN THOUSANDS EXCEPT PER SHARE DATA)
<S>                                <C>       <C>       <C>          <C>
Interest income                    $189,742  $195,056    $200,648    $201,798
Interest expense                     97,943   101,419     105,857     106,418
Provision for possible loan
losses                                3,373     3,186       3,738      21,371
Investment securities gains
(losses), net                         1,195       188         852     (35,011)
Income (loss) before income tax
expense                              52,200    54,771      56,859     (47,562)
Net income (loss)                    33,860    35,480      36,821     (53,802)
Basic earnings (loss) per share    $   0.67  $   0.71    $   0.73    $  (1.07)
Diluted earnings (loss) per share  $   0.66  $   0.70    $   0.72    $  (1.06)
Basic weighted average shares        50,546    50,157      50,191      50,340
Diluted weighted average shares      51,536    50,847      51,216      50,996
<CAPTION>
                                               1996 QUARTER ENDED
                                   --------------------------------------------
                                   MARCH 31  JUNE 30   SEPTEMBER 30 DECEMBER 31
                                   --------  --------  ------------ -----------
                                      (IN THOUSANDS EXCEPT PER SHARE DATA)
<S>                                <C>       <C>       <C>          <C>
Interest income                    $179,631  $178,898    $185,842    $186,826
Interest expense                     92,880    91,933      95,261      95,849
Provision for possible loan
losses                                3,072     3,052       3,861       3,710
Investment securities gains
(losses), net                          (614)     (321)    (10,370)        627
Income before income tax expense     45,659    48,493      17,563      53,474
Net income before extraordinary
item                                 30,727    31,710      10,962      34,303
Extraordinary item                     (686)       --          --          --
Net income                           30,041    31,710      10,962      34,303
Basic earnings per share           $   0.59  $   0.63    $   0.22    $   0.68
Diluted earnings per share         $   0.59  $   0.62    $   0.21    $   0.66
Basic weighted average shares        50,528    50,632      50,631      50,464
Diluted weighted average shares      51,443    51,519      51,498      51,724
</TABLE>
 
Net income in the fourth quarter of 1997 includes $89.8 million of merger,
integration and other one-time charges and the third quarter of 1996 includes
$22.7 million of merger, integration and other one-time charges.
 
NOTE 19 REGULATORY MATTERS:
 
The Corporation and the subsidiary banks 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 Corporation's financial statements. Under
capital adequacy guidelines and the regulatory framework for prompt corrective
action, the Corporation must meet specific capital guidelines that involve
quantitative measures of the Corporation's assets, liabilities, and certain
off-balance-sheet items as calculated under regulatory accounting practices.
The Corporation's 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 Corporation to maintain minimum amounts and ratios (set forth in
the table below) of total and Tier I capital (as defined in the regulations)
to risk-weighted assets (as defined), and of Tier I capital (as defined) to
average assets (as defined). Management believes, as of December 31, 1997,
that the Corporation and the subsidiary banks meet all capital adequacy
requirements to which they are subject.
 
                                      64
<PAGE>
 
As of December 31, 1997 and 1996, the most recent notification from the Office
of the Comptroller of the Currency and the Federal Deposit Insurance
Corporation categorized the Corporation and its two largest subsidiary banks,
FFB and Associated Bank Green Bay as well capitalized under the regulatory
framework for prompt corrective action. To be categorized as well capitalized
the Corporation 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
institution's category.
 
The actual capital amounts and ratios of the Corporation, FFB and Associated
Bank Green Bay are also presented in the table. No deductions from capital
were made for interest rate risk in 1997.
 
<TABLE>
<CAPTION>
                                                   TO BE WELL
                                                  CAPITALIZED
                                                  UNDER PROMPT
                                  FOR CAPITAL      CORRECTIVE
                                   ADEQUACY          ACTION
                    ACTUAL         PURPOSES       PROVISIONS:
                --------------- --------------- ----------------
                 AMOUNT  RATIO*  AMOUNT  RATIO*  AMOUNT  RATIO*
                -------- ------ -------- ------ -------- -------
                                ($ IN THOUSANDS)
AS OF DECEMBER
31, 1997:
- --------------
ASSOCIATED
BANC-CORP
- ----------
<S>             <C>      <C>    <C>      <C>    <C>      <C>
Total Capital   $841,883 11.86% $567,666 ^8.00% $709,852 ^10.00%
Tier I Capital  $753,135 10.61% $283,833 ^4.00% $425,749 ^ 6.00%
Leverage        $753,135  7.10% $424,482 ^4.00% $530,603 ^ 5.00%
<CAPTION>
FIRST
FINANCIAL BANK
- --------------
<S>             <C>      <C>    <C>      <C>    <C>      <C>
Total Capital   $396,629 13.63% $232,784 ^8.00% $290,980 ^10.00%
Tier I Capital  $360,219 12.38% $116,387 ^4.00% $174,588 ^ 6.00%
Leverage        $360,219  6.11% $235,823 ^4.00% $294,591 ^ 5.00%
<CAPTION>
ASSOCIATED
BANK GREEN BAY
- --------------
<S>             <C>      <C>    <C>      <C>    <C>      <C>
Total Capital   $108,061 10.39% $ 83,227 ^8.00% $104,033 ^10.00%
Tier I Capital  $ 83,035  7.98% $ 41,613 ^4.00% $ 62,420 ^ 6.00%
Leverage        $ 83,035  6.47% $ 51,318 ^4.00% $ 64,147 ^ 5.00%
<CAPTION>
AS OF DECEMBER
31, 1996:
- --------------
ASSOCIATED
BANC-CORP
- ----------
<S>             <C>      <C>    <C>      <C>    <C>      <C>
Total Capital   $786,821 13.53% $465,391 ^8.00% $581,739 ^10.00%
Tier I Capital  $763,230 13.12% $232,696 ^4.00% $349,043 ^ 6.00%
Leverage        $763,230  7.68% $397,625 ^4.00% $497,032 ^ 5.00%
<CAPTION>
FIRST
FINANCIAL BANK
- --------------
<S>             <C>      <C>    <C>      <C>    <C>      <C>
Total Capital   $346,133 13.91% $199,134 ^8.00% $248,918 ^10.00%
Tier I Capital  $364,146 14.63% $ 99,561 ^4.00% $149,351 ^ 6.00%
Leverage        $364,146  6.39% $227,947 ^4.00% $285,155 ^ 5.00%
<CAPTION>
ASSOCIATED
BANK GREEN BAY
- --------------
<S>             <C>      <C>    <C>      <C>    <C>      <C>
Total Capital   $100,777 10.52% $ 76,651 ^8.00% $ 95,814 ^10.00%
Tier I Capital  $ 76,782  8.01% $ 38,326 ^4.00% $ 57,488 ^ 6.00%
Leverage        $ 76,782  6.46% $ 47,536 ^4.00% $ 59,420 ^ 5.00%
</TABLE>
 
*Total Capital ratio is defined as Tier 1 Capital plus Tier 2 Capital divided
   by total risk-weighted assets. The Tier 1 Capital ratio is defined as Tier
   1 capital divided by total risk-weighted assets. The leverage ratio is
   defined as Tier 1 capital divided by the most recent quarter's average
   total assets.
 
                                      65
<PAGE>
 
NOTE 20 EARNINGS PER SHARE:
 
Presented below are the calculations for basic and diluted earnings per share:
 
<TABLE>
<CAPTION>
                                                 FOR THE YEARS ENDED
                                                    DECEMBER 31,
                                              --------------------------
                                               1997     1996      1995
                                              ------- --------  --------
                                              (IN THOUSANDS, EXCEPT PER
                                                     SHARE DATA)
<S>                                           <C>     <C>       <C>
Basic:
 Income before extraordinary item             $52,359 $107,702  $112,011
 Extraordinary item                                --     (686)       --
                                              --------------------------
Net income available to common stockholders   $52,359 $107,016  $112,011
Weighted average shares outstanding            50,307   50,564    49,109
Basic earnings per common share before
extraordinary item                            $  1.04 $   2.13  $   2.28
Basic earnings per common share               $  1.04 $   2.12  $   2.28
Diluted:
 Income before extraordinary item             $52,359 $107,702  $112,011
 Extraordinary item                                --     (686)       --
                                              --------------------------
Net income available to common stockholders   $52,359 $107,016  $112,011
Weighted average shares outstanding            50,307   50,564    49,109
Effect of dilutive stock options outstanding      840      940       869
                                              --------------------------
Diluted weighted average shares outstanding    51,147   51,504    49,978
Diluted earnings per common share before
extraordinary item                            $  1.02 $   2.09  $   2.24
Diluted earnings per common share             $  1.02 $   2.08  $   2.24
</TABLE>
 
                                       66
<PAGE>
 
INDEPENDENT AUDITORS' REPORT
ASSOCIATED BANC-CORP
 
The Board of Directors
Associated Banc-Corp:
 
We have audited the accompanying consolidated statements of financial
condition of Associated Banc-Corp and subsidiaries as of December 31, 1997 and
1996, and the related consolidated statements of income, changes in
stockholders' equity, and cash flows for each of the years in the three-year
period ended December 31, 1997. These consolidated financial statements are
the responsibility of Associated Banc-Corp's management. Our responsibility is
to express an opinion on these consolidated financial statements based on our
audits. We did not audit the consolidated financial statements of First
Financial Corporation and subsidiaries, a wholly-owned subsidiary of
Associated Banc-Corp, which statements reflect total assets constituting 55.2%
and 56.3% as of December 31, 1997 and 1996, respectively and total revenues
constituting 52.6%, 55.5% and 58.2% for the years ended December 31, 1997,
1996 and 1995, respectively, of the related consolidated totals. Those
financial statements were audited by Ernst & Young LLP whose report has been
furnished to us, and our opinion, insofar as it relates to the amounts
included for First Financial Corporation and subsidiaries, is based solely on
the report of Ernst & Young LLP.
 
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 of
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 and the report of Ernst &
Young LLP provide a reasonable basis for our opinion.
 
In our opinion, based on our audits and the report of Ernst & Young LLP, the
consolidated financial statements referred to above present fairly, in all
material respects, the financial position of Associated Banc-Corp 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
KPMG Peat Marwick LLP
Chicago, Illinois
January 22, 1998
 
                                      67
<PAGE>
 
INDEPENDENT AUDITORS' REPORT
FIRST FINANCIAL CORPORATION
 
The Board of Directors
First Financial Corporation
 
We have audited the accompanying consolidated statements of financial
condition of First Financial Corporation and subsidiaries as of December 31,
1997 and 1996, and the related consolidated statements of income, changes in
stockholders' equity, and cash flows for each of the years in the three-year
period ended December 31, 1997 (not presented separately herein). These
consolidated financial statements are the responsibility of the Corporation'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 of
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 First
Financial Corporation and subsidiaries at 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
ERNST & YOUNG LLP
Milwaukee, Wisconsin
January 22, 1998
 
                                      68
<PAGE>
 
MARKET INFORMATION
 
<TABLE>
<CAPTION>
                                       MARKET PRICE
                                           RANGE
                                       SALES PRICES
             -------------- ---------- -------------
             DIVIDENDS PAID BOOK VALUE  HIGH   LOW
             -------------- ---------- ------ ------
<S>          <C>            <C>        <C>    <C>
1997
 4th Quarter     $.2900       $16.15   $58.75 $46.25
 3rd Quarter     $.2900       $17.39   $48.94 $39.00
 2nd Quarter     $.2900       $16.80   $39.50 $35.75
 1st Quarter     $.2417       $16.17   $40.50 $34.58
1996
 4th Quarter     $.2417       $16.01   $36.46 $32.92
 3rd Quarter     $.2417       $15.45   $33.65 $31.88
 2nd Quarter     $.2417       $15.39   $32.92 $31.25
 1st Quarter     $.2250       $15.04   $32.92 $29.38
</TABLE>
 
Annual dividend rate: $1.16
 
Market information has been restated for the 6-for-5 stock split declared
January 22, 1997, effected in the form of a 20% stock dividend, paid on March
17, 1997, to shareholders of record March 5, 1997.
 
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
 
The information in the Corporation's definitive Proxy Statement, prepared for
the 1998 Annual Meeting of Shareholders, which contains information concerning
directors of the Corporation, under the caption "Election of Directors," is
incorporated herein by reference. The information concerning "Executive
Officers of the Registrant," as a separate item, appears in Part I of this
document.
 
ITEM 11  EXECUTIVE COMPENSATION
 
The information in the Corporation's definitive Proxy Statement, prepared for
the 1998 Annual Meeting of Shareholders, which contains information concerning
this item, under the caption "Executive Compensation," is incorporated herein
by reference.
 
ITEM 12  SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT
 
The information in the Corporation's definitive Proxy Statement, prepared for
the 1998 Annual Meeting of Shareholders, which contains information concerning
this item, under the captions "Principal Holders of Common Stock" and
"Security Ownership of Management," is incorporated herein by reference.
 
ITEM 13  CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS
 
The information in the Corporation's definitive Proxy Statement, prepared for
the 1998 Annual Meeting of Shareholders, which contains information concerning
this item under the caption "Certain Transactions," is incorporated herein by
reference.
 
 
                                      69
<PAGE>
 
                                    PART IV
 
ITEM 14 EXHIBITS, FINANCIAL STATEMENT SCHEDULES AND REPORTS ON FORM 8-K
 
(a) 1 and 2Financial Statements and Financial Statement Schedules
 
      The following financial statements and financial statement schedules
      are included under a separate caption "Financial Statements and
      Supplementary Data" in Part II, Item 8 hereof and are incorporated
      herein by reference.
 
      Consolidated Statements of Financial Condition--December 31, 1997
      and 1996
 
      Consolidated Statements of Income--For the Years Ended December 31,
      1997, 1996, and 1995
 
      Consolidated Statements of Changes in 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' Reports
 
(a) 3Exhibits Required by Item 601 of Regulation S-K
 
<TABLE>
<CAPTION>
 EXHIBIT                                       SEQUENTIAL PAGE NUMBER OR
  NUMBER          DESCRIPTION                 INCORPORATION REFERENCE TO
- -------------------------------------------------------------------------------
 <C>      <S>                           <C>
 (3)(a)   Articles of Incorporation     Filed herewith
 (3)(b)   Bylaws                        Filed herewith
 (4)      Instrument Defining the
          Rights of Security Holders,
          Including Indentures
          The Registrant, by signing
          this report, agrees to
          furnish the Securities and
          Exchange Commission, upon
          its request, a copy of any
          instrument that defines the
          rights of holders of long-
          term debt of the Registrant
          and all of its subsidiaries
          for which consolidated or
          unconsolidated financial
          statements are required to
          be filed and that
          authorizes a total amount
          of securities not in excess
          of 10% of the total assets
          of the Registrant and its
          subsidiaries on a
          consolidated basis
 *(10)(a) The 1982 Incentive Stock      Exhibit (10) to Report on Form 10-K for
          Option Plan of the            fiscal year ended December 31, 1987
          Registrant
 *(10)(b) The Restated Long-Term        Exhibits filed with Associated's
          Incentive                     registration statement (333-46467) on
          Stock Plan of the             Form S-8 filed under the Securities Act
          Registrant                    of 1933
 *(10)(c) Change of Control Plan of     Exhibit (10)(d) to Report on Form 10-K
          the                           for fiscal year ended December 31, 1994
          Registrant effective April
          25, 1994
 *(10)(d) Deferred Compensation Plan    Exhibit (10)(e) to Report on Form 10-K
          and                           for fiscal year ended December 31, 1994
          Deferred Compensation Trust
          effective
          as of December 16, 1993,
          and Deferred
          Compensation Agreement of
          the
          Registrant dated December
          31, 1994
</TABLE>
 
                                       70
<PAGE>
 
<TABLE>
<CAPTION>
 EXHIBIT                                        SEQUENTIAL PAGE NUMBER OR
 NUMBER            DESCRIPTION                INCORPORATION BY REFERENCE TO
- ------------------------------------------------------------------------------
 <C>     <S>                               <C>
 (11)    Statement Re Computation of Per   See footnote (20) in Part II Item 8
         Share
         Earnings
 (21)    Subsidiaries of the Corporation   Filed herewith
 (23)    Consent of Independent Auditors   Filed herewith
 (24)    Power of Attorney                 Filed herewith
</TABLE>
- ---------------------
* Management contracts and arrangements.
 
  Schedules and exhibits other than those listed are omitted for the reasons
  that they are not required, are not applicable or that equivalent
  information has been included in the financial statements, and notes
  thereto, or elsewhere herein.
 
(b) Reports on Form 8-K
 
  The Corporation filed a report on Form 8-K on September 15, 1997, which
  included a press release dated September 15, 1997, announcing the receipt
  of all required regulatory approvals in connection with the proposed merger
  of Associated Banc-Corp and First Financial Corporation.
 
  The Corporation filed a report on Form 8-K on October 30, 1997, which
  included a press release dated October 29, 1997, announcing the
  consummation of the merger between Associated Banc-Corp and First Financial
  Corporation. Announcements of new officers and directors were also made.
 
                                      71
<PAGE>
 
                                  SIGNATURES
 
  Pursuant to the requirements of Section 13 or 15(d) of the Securities
Exchange Act of 1934, the Registrant has duly caused this report to be signed
on its behalf by the undersigned, thereunto duly authorized.
 
                                             /s/ H. B. Conlon
                                          ASSOCIATED BANC-CORP
 
                                             H. B. Conlon
Date: March 20, 1998                      By: _________________________________
                                             Chairman, President & Chief
                                             Executive Officer
 
  Pursuant to the requirements of the Securities Exchange Act of 1934, this
report has been signed below by the following persons on behalf of the
Registrant and in the capacities and on the dates indicated.
 
  /s/ H. B. Conlon
 By: ________________________________        *
                                           By: ________________________________
  H. B. Conlon                               William R. Hutchinson
  Chairman, President, Chief                 Director
  Executive Officer and Director
 
 
  /s/ Joseph B. Selner
 By: ________________________________        *
                                           By: ________________________________
  Joseph B. Selner                           Robert P. Konopacky
  Senior Vice President-CFO                  Director
  Principal Financial Officer and
  Principal Accounting Officer
 
 
  /s/ Robert C. Gallagher
 By: ________________________________        *
                                           By: ________________________________
  Robert C. Gallagher                        Dr.George R. Leach
  Vice Chairman and Director
 
                                             Director
 
  *
 By: ________________________________        *
                                           By: ________________________________
  John C. Seramur                            John C. Meng
  Vice Chairman and Director
 
                                             Director
 
  *
 By: ________________________________        *
                                           By: ________________________________
  Robert S. Gaiswinkler                      J. Douglas Quick
  Director
 
                                             Director
 
  /s/ *
 By: ________________________________        *
                                           By: ________________________________
  Ronald R. Harder                           John H. Sproule
  Director
 
                                             Director
 
  /s/ *
 By: ________________________________        *
                                           By: ________________________________
  John S. Holbrook, Jr.                      Ralph R. Staven
  Director
 
                                             Director
 
  /s/ Brian R. Bodager
 By: ________________________________        *
                                           By: ________________________________
  Brian R. Bodager                           Norman L. Wanta
  Attorney-in-Fact                           Director
 
Date: March 20, 1998
 
                                      72

<PAGE>
 
                                 EXHIBIT 3(a)
Form 4
Secretary of State
WISCONSIN
2/92
                             ARTICLES OF AMENDMENT
                              Stock (for profit)


A.   Name of Corporation:                Associated Banc-Corp
                         ------------------------------------------------------
                             (prior to any change effected by this amendment)

     Text of Amendment (Refer to the existing Articles of incorporation and
     instruction A. Determine those items to be changed and set forth below the
     number identifying the paragraph being changed and how the amended
     paragraph is to read.)

          RESOLVED, THAT, the Articles of Incorporation of Associated Banc-Corp
     be amended to increase the number of authorized shares of Associated common
     stock to 100,000,000 shares of $0.01 par value common stock.

B.   Amendment(s) to the articles of incorporation adopted on  October 27, 1997
                                                              ------------------
                                                                     (date)
     Indicate the method of adoption by checking the appropriate choice below:

     (   )   In accordance with sec. 180.1002, Wis. Stats. (By the Board of
             Directors)
OR
     ( X )   In accordance with sec. 180.1003, Wis. Stats. (By the Board of 
             Directors and Shareholders)
OR
     (   )   In accordance with sec. 180.1005, Wis. Stats. (By Incorporators or
             Board of Directors, before issuance of shares)
             
C.   Executed on behalf of the corporation on        October 28, 1997
                                             -----------------------------------
                                                           (date)
 
                                                   /s/ BRIAN R. BODAGER
                                             -----------------------------------
                                                         (signature)
 
                                                       Brian R. Bodager 
                                             -----------------------------------
                                                        (printed name)
 
                                                      Corporate Secretary 
                                             -----------------------------------
                                                      (officer's title)
 
D.   This document was drafted by           Lori A. Flanagan, Paralegal
                                 -----------------------------------------------
                                        (name of individual required by law)

     SEE REVERSE for Instructions, Suggestions, Filing Fees and Procedures

                           Printed on Recycled Paper
<PAGE>
 
ARTICLES OF AMENDMENT   Stock (for profit)
                                  

                                  \
Lori A. Flanagan               -----    Please indicate where you would like the
Associated Banc-Corp              /   acknowledgement copy of the filed document
112 North Adams Street                sent. Please include complete name and 
P. O. Box 13307                       mailing address.           
Green Bay, WI  54307-3307 


Your phone number during the day:  (920) 433-3071
                                 ------------------

INSTRUCTIONS  (Ref. Sec. 180.1006 Wis. Stats. for document content)

  Submit one original and one exact copy to Secretary of State, P.O. Box 7846,
Madison, Wisconsin, 53707-7846.  The original must include an original, manual
signature (sec. 180.0120(e)(c), Wis. Stats.)

A.  State the name of the corporation (before any changes effected by this
amendment) and the text of the amendment(s).  The text should recite the
resolution adopted (e.g., "RESOLVED, THAT, Article 1 of the Articles of
Incorporation is hereby amended to read as follows. . . . etc.")

     If an amendment provides for an exchange, reclassification or cancellation
if issued shares, state the provisions for implementing the amendment if not
contained in the amendment itself.

B.  Enter the date of adoption of the amendment(s).  If there is more than one
amendment, identify the date of adoption of each.  Mark one of the three choices
to indicate the method of adoption of the amendment(s).

     By Board of Directors - Refer to sec. 180.1002 Wis. Stats. for specific
information on the character of amendments that may be adopted by the Board of
Directors without shareholder action.

     By Board of Directors and Shareholders - Amendments proposed by the Board
of Directors and adopted by shareholder approval.  Voting requirements differ
with circumstances and provisions in the articles of incorporation.  See sec.
180.1003 Wis. Stats. for specific information.

     By Incorporators or Board of Directors - Before issuance of shares - See
sec. 180.1005 Wis. Stats. for conditions attached to the adoption of an
amendment approved by a vote or consent of less than 2/3rds of the shares
subscribed for.

C.  Enter the date of execution and the name and title of the person signing the
document.  The document must be signed by one of the following:  An officer (or
incorporator if directors have not yet been elected) of the corporation or the
fiduciary if the corporation is in the hands of a receiver, trustee, or other
court-appointed fiduciary.  At least one copy must bear an original manual
signature.

D.  If the document is executed in Wisconsin, sec. 14.38(14) Wis. Stats.
provides that it shall not be filed unless the name of the drafter (either an
individual or a governmental agency) is printed in a legible manner.

FILING FEES

Submit the document with a minimum filing fee of $40.00, payable to SECRETARY OF
STATE.  If the amendment causes an increase in the number of authorized shares,
provide an additional fee of 1 cent for each new authorized share.  When the
document has been filed, an acknowledgment copy stamped "FILED" will be sent to
the address indicated above.

<PAGE>
 
                                 EXHIBIT 3(b)


                                AMENDED BYLAWS
                                --------------


                                   ARTICLE I

The principal office of Associated Banc-Corp (the "Corporation") in the State of
Wisconsin shall be located in the City of Green Bay, County of Brown.  The
Corporation may have such other offices, either within or without the State of
Wisconsin, as the Board of Directors may designate or as the business of the
Corporation may require from time to time.

The registered office of the Corporation required by the Wisconsin Business
Corporation Law to be maintained in the State of Wisconsin may be, but need not
be, identical with the principal office in the State of Wisconsin, and the
address of the registered office may be changed from time to time by the Board
of Directors.


                                  ARTICLE II

                                 SHAREHOLDERS

Section 1 - Annual Meeting

The Annual Meeting of Shareholders shall be held on the fourth (4th) Wednesday
in the month of April of each year at 10:00 AM, or at such other time and date
as shall be fixed by the Board of Directors, for the purpose of electing
Directors and for the transaction of such other business as may come before the
meeting subject to Sections 5 and 6 below. Every election of Directors shall be
managed by three (3) judges, who shall be appointed from among the shareholders
by the Chairman of the meeting.  The judges of election shall hold and conduct
the election and shall, after the election has been held, notify under their
hands the Secretary of the Corporation of the results thereof and the names of
the Directors-Elect.  If the day fixed for the Annual Meeting shall be a legal
holiday in the State of Wisconsin, such meeting shall be held on the next
succeeding business day.  If the election of Directors shall not be held at the
Annual Meeting of the shareholders, or at any adjournment thereof, the Board of
Directors shall cause the election to be held at a Special Meeting of the
shareholders as soon thereafter as convenient.  Failure to hold an Annual
Meeting in one (1) or more years does not affect the validity of any corporate
action.

Section 2 - Special Meetings

Special Meetings of the shareholders, for any purpose or purposes, may be called
by the President or the Board of Directors, and shall be called by the President
at the request of the holders of not less than one-tenth (1/10) of all the
outstanding shares of the Corporation entitled to vote at the meeting.
<PAGE>
 
Section 3 - Place of Meeting

The Board of Directors may designate any place, within or without the State of
Wisconsin, as the place of meeting for any Annual Meeting or for any Special
Meeting called by the Board of Directors.  If no designation is made, or if a
Special Meeting be otherwise called, the place of meeting shall be the
registered office of the Corporation in the State of Wisconsin, but any meeting
may be adjourned to reconvene at any place designated by vote of a majority of
the shares represented thereat.

Section 4 - Notice of Meeting

Notice stating the place, day, and hour of the meeting, and in the case of a
Special Meeting, the purpose or purposes for which the meeting is called, shall
be delivered to each shareholder of record entitled to vote at such meeting not
less than ten (10) nor more than sixty (60) days before the date of the meeting,
such notice to be delivered in accordance with the provisions of Article XIII
below.

Section 5 - Advance Notice of Shareholder Proposed Business at Annual Meeting

At any Annual Meeting of Shareholders, only such business shall be conducted as
shall have been properly brought before the meeting.  To be properly brought
before an Annual Meeting, business must be either (a) specified in the notice of
meeting (or any supplement thereto) given by or at the direction of the Board;
(b) otherwise properly brought before the meeting by or at the direction of the
Board; or (c) otherwise properly brought before the meeting by a shareholder.
In addition to any other applicable requirements for business to be properly
brought before an Annual Meeting by a shareholder, the shareholder must have
given timely notice thereof in writing to the Secretary of the Corporation.  To
be timely, a shareholder's notice must be delivered to or mailed and received at
the principal executive offices of the Corporation, not less than sixty (60)
days prior to the meeting nor more than seventy-five (75) days prior to the
meeting; provided, however, that in the event that less than seventy (70) days'
notice or prior public disclosure of the date of the Annual Meeting is given or
made to shareholders, to be timely, notice by the shareholder must be so
received not later than the close of business on the tenth (10th) day following
the day on which such notice or such public disclosure was made.

The Secretary of the Corporation shall determine whether a notice delivered
pursuant to this section complies with the requirements of this section so as to
be considered properly delivered to the Corporation.  If the Secretary shall
determine that such notice has not been properly delivered to the Corporation,
the Secretary shall notify the shareholder in writing within five (5) days from
the date such notice was received by the Corporation of such determination and
the basis therefor and whether such shareholder will be entitled to provide a
revised notice in accordance with the following sentence.  A revised notice may
be submitted by such shareholder to the Corporation within three (3) days after
receipt of such notice from the Secretary if the initial notice delivered by
such shareholder to the Secretary of the Corporation is determined by the
Secretary to have been a good faith attempt to comply with the requirements of
this section.  The Secretary shall review any revised notice submitted and
determine whether such revised notice complies with the requirements of this
Section so as to be considered properly delivered to the Corporation.  If the
Secretary shall determine that the 
<PAGE>
 
revised notice was not properly delivered to the Corporation, the Secretary
shall notify the shareholder in writing within three (3) business days from the
date the revised notice was received by the Corporation of such determination
and the basis therefor.

A shareholder's notice to the Secretary shall set forth as to each matter the
shareholder proposes to bring before the Annual Meeting (a) a brief description
of the business desired to be brought before the Annual Meeting and the reasons
for conducting such business at the Annual Meeting; (b) the name and address of
the shareholder proposing such business; (c) the class and number of shares of
the Corporation which are beneficially owned by the shareholder; and (d) any
material interest of the shareholder in such business.

Notwithstanding anything in these Bylaws to the contrary, no business shall be
conducted at the Annual Meeting except in accordance with the procedures set
forth in this Section 5; provided, however, that nothing in this Section 5 shall
be deemed to preclude discussion by any shareholder of any business properly
brought before the Annual Meeting in accordance with said procedures.

The Chairman of an Annual Meeting shall, if the facts warrant, determine and
declare to the meeting that business was not properly brought before the meeting
in accordance with the provisions of this Section 5, and if he should so
determine, he shall so declare to the meeting and any such business not properly
brought before the meeting shall not be transacted.

Section 6 - Nomination of Directors

Only persons nominated in accordance with the following procedures shall be
eligible for election as directors.  Nominations of persons for election to the
Board of Directors of the Corporation may be made at any meeting of shareholders
by or at the direction of the Board of Directors or by any shareholder entitled
to vote for the election of directors who complies with the procedures set forth
in this section.  Nominations by shareholders shall be made pursuant to timely
notice in writing to the Secretary of the Corporation. To be timely, such notice
must be delivered to or mailed and received at the principal executive offices
of the Corporation not less than sixty (60) days nor more than seventy-five (75)
days prior to the meeting; provided, however, that in the event that less than
seventy (70) days' notice or prior public disclosure of the date of the meeting
is given or made to shareholders, to be timely, notice by the shareholder must
be so received not later than the close of business on the tenth (10th) day
following the day on which such notice or such public disclosure was made.

The Secretary of the Corporation shall determine whether a notice delivered
pursuant to this section complies with the requirements of this Section so as to
be considered properly delivered to the Corporation.  If the Secretary shall
determine that such notice has not been properly delivered to the Corporation,
the Secretary shall notify the shareholder in writing within five (5) days from
the date such notice was received by the Corporation of such determination and
the basis therefor and whether such shareholder will be entitled to provide a
revised notice in accordance with the following sentence.  A revised notice may
be submitted by such shareholder to the Corporation within three (3) days after
receipt of such notice from the Secretary if the initial notice delivered by
such shareholder to the Secretary of the Corporation is determined by the
Secretary to have been a good faith attempt to comply with 
<PAGE>
 
the requirements of this section. The Secretary shall review any revised notice
submitted to the Corporation in accordance with this section, and determine
whether such revised notice complies with the requirements of this section so as
to be considered properly delivered to the Corporation. If the Secretary shall
determine that the revised notice was not properly delivered to the Corporation,
the Secretary shall notify the shareholder in writing within three (3) business
days from the date the revised notice was received by the Corporation of such
determination and the basis therefor.

A shareholder's notice to the Secretary shall set forth (a) as to each person
proposed to be nominated (i) the name, age, address (business and residence),
principal occupation or employment of such person (present and for the past five
(5) years), (ii) the number of shares of the Corporation such person
beneficially owns (as such term is defined by Section 13(d) of the Securities
Exchange Act of 1934, as amended [the "Exchange Act"]) and (iii) any other
information relating to such person that would be required to be disclosed in a
definitive proxy statement to shareholders prepared in connection with an
election of directors pursuant to Section 14(a) of the Exchange Act; and (b) as
to the shareholder giving the notice (i) the name and address (business and
residential) of the shareholder, and (ii) the number of shares of the
Corporation the shareholder beneficially owns (as such term is defined by
Section 13(d) of the Exchange Act).  The Corporation may require any proposed
nominee to furnish additional information as may be reasonably required to
determine the qualifications of such person to serve as a director of the
Corporation.  No person shall be eligible for election as a director of the
Corporation unless nominated in accordance with the procedures set forth in this
Section 6.

Section 7 - Record Date for Notice, Voting and Distributions

For the purpose of determining shareholders entitled to notice of or to vote at
any meeting of shareholders or any adjournment thereof, to demand a Special
Meeting or to take any other action, the record date shall be thirty (30) days
before such meeting or action is scheduled or at such other date fixed in
advance by the Board of Directors which in no event shall be set more than
seventy (70) days before the meeting or action requiring a determination of
shareholders. When a determination of shareholders entitled to vote at any
meeting of shareholders has been made as provided in this section, such
determination shall be applied to any adjournment thereof unless the Board of
Directors fixes a new record date, which it shall do if the meeting is adjourned
to a date more than one hundred twenty (120) days after the date fixed for the
original meeting.  The record date for determining shareholders entitled to a
distribution, other than a distribution involving a purchase, redemption, or
other acquisition of the Corporation's shares, is the date on which the Board of
Directors authorizes the distribution, unless the Board of Directors fixes a
different record date in advance.

Section 8 - Shareholders' List for Meeting

Once a record date has been fixed for a meeting, the Corporation shall prepare a
list of the names of all its shareholders who are entitled to notice of a
shareholders' meeting.  Such list shall be arranged by class or series of shares
and show the address of and number of shares held by each shareholder.  The
shareholders' list will be available for inspection by any shareholder or his
agent or attorney beginning two (2) business days after notice of the meeting is
given for which the list was prepared and continuing up to and through the time
for the 
<PAGE>
 
meeting or any adjournment thereof at the Corporation's principal offices, or at
a place identified in the meeting notice in the city where the meeting will be
held. A shareholder or his agent or attorney may, on written demand, subject to
applicable Wisconsin statutes, copy the list, during regular business hours and
at his expense, during the period that it is available for inspection under this
Section. Refusal or failure to prepare or make available the shareholders' list
does not affect the validity of action taken at the meeting.

Section 9 - Quorum and Voting Requirements for Voting Groups

Shares entitled to vote as a separate voting group may take action on a matter
at a meeting only if a quorum of those shares, represented in person or by
proxy, exists with respect to that matter.  Unless the Articles of Incorporation
or applicable statutes provide otherwise, a majority of the votes entitled to be
cast on the matter by the voting group constitutes a quorum of that voting group
for action on that matter.  Once a share is represented for any purpose at a
meeting, other than for the purpose of objecting to holding the meeting or
transacting business at the meeting, it is considered present for purposes of
determining whether a quorum exists, for the remainder of the meeting and for
any adjournment of that meeting unless a new record date is or must be set for
that adjourned meeting.  If a quorum exists, action on a matter, other than the
election of directors, by a voting group is approved if a majority of the votes
cast favors the action, unless the Articles of Incorporation or applicable
statutes require a greater number of affirmative votes.

Section 10 - Proxies

At all meetings of shareholders, a shareholder entitled to vote may vote in
person or by proxy appointed, in writing, by the shareholder or by his duly
authorized attorney in fact.  Such proxy shall be filed with the Secretary of
the Corporation before or at the time of the meeting.  No proxy shall be valid
after eleven (11) months from the date of its execution, unless otherwise
provided in the proxy.

Section 11 - Voting of Shares

Each outstanding shareholder entitled to vote shall be entitled to one (1) vote
upon each matter submitted to a vote at a meeting of shareholders.

Section 12 - Voting Company's Shares

Shares of the Corporation belonging to it shall not be voted directly or
indirectly at any meeting and shall not be counted in determining the total
number of outstanding shares at any given time, but shares held by the
Corporation in a fiduciary capacity may be voted and shall be counted in
determining the total number of outstanding shares at any given time.
Redeemable shares are not entitled to vote after written notice, properly given,
is mailed to the holders and a sum sufficient to redeem the shares has been
deposited with a bank named by the Board of Directors of the Corporation under
an irrevocable obligation to pay the holders the redemption price on surrender
of the shares.
<PAGE>
 
Section 13 - Shares in Name of Another Corporation or Trustee

Shares outstanding in the name of another corporation may be voted by the
president of such corporation, or any other officer or proxy appointed by such
president in the absence of express notice of the designation of some other
person by the Board of Directors or bylaws of such other corporation.  Shares in
the name of a trustee shall be voted in the manner designated by a majority of
the trustees or their proxy unless a greater concurrence of trustees is required
by the trust, of which the Corporation shall have actual notice.

Section 14 - Adjournment

An Annual or Special Meeting of shareholders may be adjourned by a majority of
shares represented, even if less than a quorum.  Upon being reconvened, the
adjourned meeting shall be deemed to be a continuation of the initial meeting; a
quorum will be deemed present if a quorum of shares was represented at the
initial meeting, and any business that could be conducted at the initial meeting
may be considered at the adjourned meeting.  If a quorum was not present at the
initial meeting but is present at the adjourned meeting, then any business may
be transacted at the adjourned meeting.  A meeting may be adjourned at any time,
including after action on one (1) or more matters, and for any purpose
including, but not limited to, allowing additional time to solicit votes on one
(1) or more matters, to disseminate additional information to shareholders, or
to count votes.  No new notice need be given for an adjourned meeting if the
time and place of the adjournment are announced at the initial meeting and no
new record date for the adjourned meeting is required unless otherwise required
by law.

Section 15 - Waiver of Notice

A shareholder may waive any notice required by these Bylaws, the Articles of
Incorporation or under the provisions of any applicable statute, before or after
the date and time stated in the notice, provided such waiver is in writing and
signed by the shareholder entitled to the notice, contains the same information
that would have been required in the notice under any applicable provisions
under any statute, except that the time and place of the meeting need not be
stated.  Such waiver must be delivered to the Corporation for inclusion in the
corporate records.

A shareholder's attendance at a meeting, in person or by proxy, waives objection
to (a) lack of notice or defective notice of the meeting, unless the shareholder
at the beginning of the meeting or promptly upon arrival objects to holding the
meeting or transacting business at the meeting; and (b) consideration of a
particular matter at the meeting that is not within the purpose described in the
meeting notice, unless the shareholder objects to considering the matter when it
is presented.


                                  ARTICLE III

                              BOARD OF DIRECTORS

Section 1 - General Powers

The business and affairs of the Corporation shall be managed by its Board of
Directors.
<PAGE>
 
Section 2 - Retirement and Nomination of Corporate and Affiliate Directors

     (a)  Retirement of Corporate Directors - Directors shall retire as a
          Director of the Corporation at the Annual Meeting following their
          attainment of age 65.

          Directors may be extended beyond their normal retirement age for
          additional one (1) year terms in circumstances that will be of
          significant benefit to the Corporation by a two-thirds (2/3) vote of
          the Board.

     (b)  Retirement of Affiliate Directors - All affiliate Directors will
          retire, as a Director of an affiliate corporation, at the Annual
          Meeting following their attainment of age 65. The Chief Executive
          Officer of the Corporation may nominate an affiliate Director for an
          additional term but only for unusual circumstances which will result
          in a significant benefit to the Corporation.

     (c)  Nomination of Directors to the Corporate Board of Directors - The
          Corporate Board of Directors shall annually appoint a Nomination
          Committee to review candidates for membership on the Corporate Board
          of Directors and recommend individuals for nomination to the Board.
          This Committee shall also prepare and periodically review with the
          entire Board of Directors a list of general criteria for Board
          nominees.

          In order to be considered for renomination to an additional term on
          the Corporate Board of Directors, the individual should continue to
          meet the criteria established for nominees to the Board of Directors.

          In connection with the merger (the "Merger") between First Financial
          Corporation, a Wisconsin corporation ("First Financial") and a wholly
          owned subsidiary of the Corporation, approved by the Board of
          Directors of the Corporation on May 14, 1997, and approved by the
          shareholders of the Corporation on October 27, 1997, each individual
          who previously served as a Director of First Financial who, in
          accordance with the Agreement and Plan of Merger dated as of May 14,
          1997, among the Corporation, Badger Merger Corp., and First Financial
          is to be appointed Director of the Corporation upon consummation of
          the Merger may be so appointed regardless of that individual's age at
          the time of such appointment. If the individual is at the time of such
          appointment beyond the normal retirement age as set forth in Paragraph
          (a), above, that individual's service as a Director of the Corporation
          shall be deemed at the time of such appointment to have been extended
          until the next Annual Meeting in accordance with the second paragraph
          of Paragraph (a).

     (d)  Nomination of Directors to Affiliated Corporation Boards - Each
          affiliate Board should establish a list of general criteria for
          evaluating nominees and provide a process for reviewing nominees for
          the Board of Directors and making recommendations to the entire
          affiliate Board.

          Prior to the submission of any nomination to the affiliate
          corporation's Board of
<PAGE>
 
          Directors, the affiliate will submit, in writing, a request for
          approval of that nomination from the Chief Executive Officer of the
          Corporation.

          In order to be considered for renomination to an additional term on an
          affiliated Board of Directors, the individuals should continue to meet
          the criteria established for nominees to the Board of Directors.

Section 3 - Organization Meeting

The Secretary, upon receiving the certificate of the judges of the result of any
election, shall notify the Directors-Elect of their election and of the time at
which they are required to meet at the main office of the Corporation for the
purpose of organizing the new Board and electing and appointing officers of the
Corporation for the succeeding year.  Such meeting shall be held on the day of
the election or as soon thereafter as practicable, and, in any event, within
thirty (30) days thereof.  If, at the time fixed for such meeting, there shall
not be a quorum present, the Directors present may adjourn the meeting from time
to time, until the quorum is obtained.

Section 4 - Regular Meetings

The regular meetings of the Board of Directors shall be held on the fourth (4th)
Wednesday of each month of January, April, July, and October at 10:00 AM or at
such other date and time as is determined by the Chairman of the Board, at the
main office of the Corporation or at such other place as is designated by the
Chief Executive Officer of the Corporation.

Section 5 - Special Meeting

Special meetings of the Board of Directors may be called by or at the request of
the Chairman of the Board, President, Secretary, or by a majority of the
directors.  The person or persons authorized to call special meetings of the
Board of Directors may fix any place for holding any special meeting of the
Board of Directors called by them.

Section 6 - Notice

Notice of any special meeting shall be given at least forty-eight (48) hours
previously thereto, except in the case of an emergency meeting as provided under
the Wisconsin Business Corporation Law by written or oral notice as provided for
and in accordance with Article XIII below.  Whenever any notice is required to
be given to any Director of the Corporation under the provisions of these Bylaws
or under the provisions of the Articles of Incorporation or under the provisions
of any statute, a waiver thereof in writing, signed at any time, whether before
or after the time of meeting, by the Director entitled to such notice, shall be
deemed equivalent to the giving of such notice.  The attendance of a Director at
a meeting shall constitute a waiver of notice of such meeting, except where a
director attends a meeting and objects thereat to the transaction of any
business because the meeting is not lawfully called or convened.  Neither the
business to be transacted at, nor the purpose of any regular or special meeting
of the Board of Directors need be specified in the notice or waiver of notice of
such meeting.
<PAGE>
 
Section 7 - Quorum

A majority of the number of Directors shall constitute a quorum for the
transaction of business at any meeting of the Board of Directors, but though
less than such quorum is present at a meeting, a majority of the Directors may
adjourn the meeting from time to time without further notice.

Section 8 - Vacancies

When any vacancy occurs among the Directors, including a vacancy created by an
increase in the numbers of directors, the remaining members of the Board, in
accordance with the Wisconsin Business Corporation Law, may appoint a Director
to fill such vacancy for the unexpired portion of the term at any regular
meeting of the Board or at a special meeting called for that purpose.

Section 9 - Compensation

The Board of Directors, by affirmative vote of a majority of the Directors then
in office, and irrespective of any personal interest of any of its members, may
establish reasonable compensation of all directors for services to the
Corporation as Directors, officers, or otherwise, or may delegate such authority
to an appropriate committee.

Section 10 - Presumption of Assent

A Director of the Corporation who is present at a meeting of the Board of
Directors or a committee thereof at which action on any corporate matter is
taken shall be presumed to have assented to the action taken unless he objects
at the beginning of the meeting or promptly upon his arrival to holding the
meeting or transacting business at the meeting or unless he shall file his
written dissent to such action with the person acting as Secretary of the
meeting before the adjournment thereof or shall forward such dissent by
registered mail to the Secretary of the Corporation immediately after the
adjournment of the meeting.  Such right to dissent shall not apply to a director
who voted in favor of such action.

Section 11 - Other Committees

A majority of the Board of Directors may appoint, from time to time, from its
own members, two (2) or more persons to such committees that it deems necessary
for such purposes and with such powers as the Board may determine.


                                  ARTICLE IV

                                   OFFICERS

Section 1 - Number

The principal officers of the Corporation shall be a Chairman of the Board,
President, one (1) or more Executive Vice Presidents/Senior Vice Presidents or
Vice Presidents, Secretary, and 
<PAGE>
 
Treasurer, each of whom shall be elected by the Board of Directors. Such other
officers and assistant officers as may be deemed necessary may be elected or
appointed by the Board of Directors. Any two (2) or more offices may be held by
the same person.

Section 2 - Election and Term of Office

The officers of the Corporation to be elected by the Board of Directors shall be
elected annually by the Board of Directors at the first meeting of the Board of
Directors held after each Annual Meeting of shareholders.  If the election of
officers shall not be held at such meeting, such election shall be held as soon
thereafter as convenient.  Each officer shall hold his office until his
successor shall have been duly elected and shall have qualified or until his
death, or until he shall resign or shall have been removed in the manner
hereinafter provided.

Section 3 - Removal

Any officer or agent elected or appointed by the Board of Directors may be
removed by the Board of Directors whenever in its judgment the best interests of
the Corporation will be served thereby, but such removal shall be without
prejudice to the contract rights, if any, of the person so removed.  Election or
appointment shall not of itself create contract rights.

Section 4 - Vacancies

A vacancy in any principal office because of death, resignation, removal,
disqualification, or otherwise, shall be filled by the Board of Directors for
the unexpired portion of the term.

Section 5 - Chairman of the Board

The Board of Directors may appoint one (1) of its members to be Chairman of the
Board to serve at the pleasure of the Board.  He shall preside at all meetings
of the shareholders and of the Board of Directors.  The Chairman of the Board
may be appointed as Chief Executive Officer.  If no President is appointed or in
the absence of the President or in the event of his death, inability, or refusal
to act, the Chairman of the Board shall perform the duties of the President, and
when so acting shall have all the powers of and be subject to all the
restrictions upon the President.  He shall also have and may exercise such
further powers and duties as from time to time may be conferred upon or assigned
to him by the Board of Directors.

Section 6 - President

The Board of Directors may also appoint the Chairman of the Board as President.
If a President is appointed, he may be also designated the Chief Executive
Officer of the Corporation and, subject to the control of the Board of
Directors, shall, in general, supervise and control all of the business and
affairs of the Corporation.  He shall, in the absence of the Chairman of the
Board, preside at all meetings of the shareholders and of the Board of
Directors.  He may sign, with the Secretary or any other proper officer of the
Corporation thereunto authorized by the Board of Directors, certificates for
shares of the Corporation, any deeds, mortgages, bonds, contracts, or other
instruments which the Board of Directors has authorized to be executed except in
cases where the signing and execution thereof shall be 
<PAGE>
 
expressly delegated by the Board of Directors or by these Bylaws to some other
officer or agent of the Corporation, or shall be required by law to be otherwise
signed or executed; and, in general, shall perform all duties incident to the
office of President and such other duties as may be prescribed by the Board of
Directors from time to time.

Section 7 - Executive Vice President/Senior Vice President

The Board of Directors may appoint one (1) or more Executive Vice
Presidents/Senior Vice Presidents who will report to the Chief Executive Officer
of the Corporation or such other individual as designated by the Board of
Directors.

Section 8 - Vice President

The Board of Directors may appoint one (1) or more Vice Presidents.  Any Vice
President may sign with the Secretary or an Assistant Secretary, certificates
for shares of the Corporation, and shall perform such other duties as from time
to time may be assigned to him by the President or by the Board of Directors.

Section 9 - Secretary

The Secretary shall (a) keep the Minutes of the shareholders' and of the Board
of Directors' meetings in one (1) or more books provided for that purpose; (b)
see that all notices are duly given in accordance with the provisions of these
Bylaws or as required by law; (c) be custodian of the corporate records and of
the seal of the Corporation and see that the seal of the Corporation is affixed
to all documents, the execution of which on behalf of the Corporation under its
seal is duly authorized; (d) keep a register of the post office address of each
shareholder which shall be furnished to the Secretary by such shareholder; (e)
sign with the President, or a Vice President, certificates for shares of the
Corporation, the issuance of which shall have been authorized by resolution of
the Board of Directors; (f) have general charge of the stock transfer books of
the Corporation; and (g) in general, perform all duties incident to the office
of Secretary and such other duties as from time to time may be assigned to him
by the President or by the Board of Directors.

Section 10 - Treasurer

If required by the Board of Directors, the Treasurer shall give a bond for the
faithful discharge of his duties in such sum and with such surety or sureties as
the Board of Directors shall determine.  He shall (a) have charge and custody of
and be responsible for all funds and securities of the Corporation; receive and
give receipts for monies due and payable to the Corporation from any source
whatsoever; and deposit all such monies in the name of the Corporation in such
banks, trust companies, or other depositories as shall be selected in accordance
with the provisions of Article V of these Bylaws; and (b) in general, perform
all of the duties incident to the office of Treasurer and such other duties as
from time to time may be assigned to him by the Chairman of the Board, the
President, or the Board of Directors.
<PAGE>
 
Section 11 - Assistant Secretaries and Assistant Treasurers

The Assistant Secretaries, when authorized by the Board of Directors, may sign
with the President or a Vice President certificates for shares of the
Corporation, the issuance of which shall have been authorized by a resolution of
the Board of Directors.  The Assistant Treasurers, respectively, if required by
the Board of Directors, give bonds for the faithful discharge of their duties in
such sums and with such sureties as the Board of Directors shall determine.  The
Assistant Secretaries and Assistant Treasurers, in general, shall perform such
duties as shall be assigned to them by the Secretary or the Treasurer,
respectively, or by the President or the Board of Directors.

Section 12 - Officer Inability to Act

In the case of absence or inability to act of any officer of the Corporation and
of any person herein authorized to act in his place, the Board of Directors may
from time to time delegate the power or duties of such officer to any other
officer or any Director or any other person whom it may elect.

Section 13 - Salaries

The salaries of the officers shall be fixed from time to time by the Board of
Directors and no officer shall be prevented from receiving such salary by reason
of the fact he is also a Director of the Corporation.

Section 14 - Retirement of Corporate Officers

All Corporate officers shall retire at the end of the month in which the officer
reaches the age of 65.

Section 15 - Retirement of Executive Officers of Subsidiary Corporations

An executive officer of a subsidiary corporation is defined as a Chairman of the
Board of Directors, Vice Chairman of the Board of Directors, Chairman of the
Executive Committee, President, Executive Vice President, or any other person
who participates in major policy-making functions of the organization.

All executive officers of subsidiary corporations shall retire at the end of the
month in which that officer reaches the age of 65.

Section 16 - Appointment and Review of Subsidiary Chief Executive Officers

The Corporation, through its Chief Executive Officer, shall have final approval
of the appointment of all Chief Executive Officers of affiliated corporations as
well as individuals designated to succeed to that position.  The decision of the
Corporate Chief Executive Officer may be appealed to the Board of Directors of
the Corporation.

The Chief Executive Officer of the Corporation shall at least semi-annually
review the performance of the Chief Executive Officer of each affiliated
corporation with that same officer.  Annually, he shall provide the affiliate
Board of Directors or designated committee a 
<PAGE>
 
written review of the Chief Executive Officer's performance. This review shall
contain recommendations concerning that individual's future compensation.


                                   ARTICLE V

                     CONTRACTS, LOANS, CHECKS AND DEPOSITS

Section 1 - Contracts

The Board of Directors may authorize any officer or officers, agent or agents,
to enter into any contract or execute and deliver any instrument in the name of
and on behalf of the Corporation, and such authorization may be general or
confined to specific instances.

Section 2 - Loans

The Board of Directors, without the approval of shareholders, and in accordance
with existing applicable laws and regulations, may authorize and issue debt
obligations whether or not subordinated.  However, no loans shall be contracted
on behalf of the Corporation and no evidences of indebtedness shall be issued in
its name unless authorized by or under the authority of a resolution of the
Board of Directors.  Such authorization may be general or confined to specific
instances.

Section 3 - Checks, Drafts, Etc.

All checks, drafts or other orders for the payment of money, notes or other
evidences of indebtedness issued in the name of the Corporation, shall be signed
by such officer or officers, agent or agents, of the Corporation and in such
manner as shall from time to time be determined by or under the authority of
resolution of the Board of Directors.


                                  ARTICLE VI

                  CERTIFICATES FOR SHARES AND THEIR TRANSFER

Section 1 - Certificates for Shares

Certificates representing shares of the Corporation shall be in such form as
shall be determined by the Board of Directors.  Such certificates shall be
signed by the President or a Vice President and by the Secretary or an Assistant
Secretary.  All certificates for shares shall be consecutively numbered or
otherwise identified.  The name and address of the person to whom the shares
represented thereby are issued, with the number of shares and date of issue,
shall be entered on the stock transfer records of the Corporation.  All
certificates surrendered to the Corporation for transfer shall be canceled and
no new certificates shall be issued until the former certificate for a like
number of shares shall have been surrendered and canceled, except that in the
case of a lost, destroyed, or mutilated certificate, a new one may be issued
therefore upon such terms and indemnity to the Corporation as the Board of
Directors may prescribe.
<PAGE>
 
Section 2 - Transfer of Shares

Transfer of shares of the Corporation shall be made only on the stock transfer
books of the Corporation by the holder of record thereof or by his legal
representative, who shall furnish proper evidence of authority to transfer or by
his attorney thereunto authorized by power of attorney duly executed and filed
with the Secretary of the Corporation, and on surrender for cancellation of the
certificate for such shares.  The person in whose name shares stand on the books
of the Corporation shall be deemed by the Corporation to be the owner thereof
for all purposes.

Section 3 - Stock Regulations

The Board of Directors shall have the power and authority to make all such
further rules and regulations not inconsistent with the statutes of the State of
Wisconsin as they may deem expedient concerning the issue, transfer, and
registration of certificates representing shares of the Corporation.


                                  ARTICLE VII

                                  FISCAL YEAR

The fiscal year of the Corporation shall begin the first (1st) day of January
and end on the thirty-first (31st) day of December in each year.


                                 ARTICLE VIII

                            DIVIDENDS AND FINANCES

The Board of Directors may from time to time declare, and the Corporation may
pay, dividends on its outstanding shares in the manner and upon the terms and
conditions provided by law and its Articles of Incorporation.

Before making any distribution of profits, there may be set aside out of the net
profits of the Corporation such sum or sums as the Directors may from time to
time, in their absolute discretion, deem expedient as a reserve fund to meet
contingencies or for equalizing dividends, or for maintaining any property of
the Corporation, or for any other purpose, and profits of any year not
distributed as dividends shall be deemed to have been thus set apart until
otherwise disposed of by the Board of Directors.


                                  ARTICLE IX

                               BOOKS AND RECORDS

No shareholder shall have any right to inspect any account or document of the
Corporation, 
<PAGE>
 
except as conferred by law or by resolution of the shareholders or Directors;
provided, that the provisions of this paragraph shall not be construed as
changing in any way the duty of the Treasurer to make proper reports to the
shareholders at the Annual Meeting.


                                   ARTICLE X

                     VOTING OF SHARES OWNED BY CORPORATION

Unless otherwise directed by the Board of Directors, the President shall have
full power and authority on behalf of the Corporation to attend and to act and
to vote at any meeting of the shareholders of any corporation in which this
Corporation may hold stock, and at any such meeting shall possess and may
exercise all of the rights and power incident to the ownership of such stock,
and which, as the owner thereof, the Corporation might have possessed and
exercised if present.

Votes may be cast by proxy on behalf of the Corporation; however, each such
proxy must be executed by the President and attested by the Secretary without
further authority of the Board of Directors.

The Board of Directors may confer similar power to other corporate officers from
time to time.


                                  ARTICLE XI

                   INDEMNIFICATION OF DIRECTORS AND OFFICERS

Section 1 - Definitions to Indemnification and Insurance Provisions

     (a)  "Director, Officer, Employee or Agent" means any of the following:

          (i)   a natural person who, is or was a director, officer, employee or
                agent of the corporation;

          (ii)  a natural person who, while a director, officer, employee or 
                agent of the Corporation, is or was serving either pursuant to
                the Corporation's specific request or as a result of the nature
                of such person's duties to the Corporation as a director,
                officer, partner, trustee, member of any governing or decision
                making committee, employee or agent of another corporation or
                foreign corporation, partnership, joint venture, trust or other
                enterprise;

          (iii) a natural person who, while a director, officer, employee or 
                agent of the Corporation, is or was serving an employee benefit
                plan because his or her duties to the Corporation also impose
                duties on, or otherwise involve services by, the person to the
                plan or to participants in or beneficiaries of the plan; or (iv)
                unless the context requires otherwise, the estate or personal
                representative
<PAGE>
 
                of a director, officer, employee or agent.

     (b)  "Liability" means the obligation to pay a judgment, penalty,
          assessment, forfeiture or fine, including an excise tax assessed with
          respect to an employee benefit plan, the agreement to pay any amount
          in settlement of a proceeding (whether or not approved by a court
          order), and reasonable expenses and interest related to the foregoing.

     (c)  "Party" means a natural person who is or was threatened to be made, a
          named defendant or respondent in a proceeding.

     (d)  "Proceeding" means a threatened, pending or completed civil, criminal,
          administrative, or investigative action, suit, arbitration, or other
          proceeding, whether formal or informal (including but not limited to
          any act or failure to act alleged or determined to have been
          negligent; to have violated the Employee Retirement Income Security
          Act of 1974; or to have violated Sections 180.0833, 180.1202 and
          180.0832 of the Wisconsin Statutes, or any successor thereto,
          regarding improper dividends, distributions of assets, or loans to
          directors), which involves foreign, federal, state or local law and
          which is brought by or in the right of the Corporation or by any other
          person or entity, to which the director, officer, employee or agent
          was a party because he or she is a director, officer, employee or
          agent.

     (e)  "Expenses" mean all reasonable fees, costs, charges, disbursements,
          attorneys' fees and any other expenses incurred in connection with the
          proceeding.

Section 2 - Indemnification of Officers, Directors, Employees and Agents

     (a)  The Corporation shall indemnify a director, officer, employee or agent
          to the extent he or she has been successful on the merits or otherwise
          in the defense of any proceeding, for all reasonable expenses.

     (b)  In cases not included under Subsection (a), the Corporation shall
          indemnify a director, officer, employee, or agent against liability
          and expenses incurred by such person in a proceeding unless it shall
          have been proven by final judicial adjudication that such person
          breached or failed to perform a duty owed to the Corporation which
          constituted:

          (i)   A willful failure to deal fairly with the Corporation or its
                shareholders in connection with a matter in which the director,
                officer, employee or agent has a material conflict of interest;

          (ii)  A violation of criminal law, unless the director, officer, 
                employee or agent had reasonable cause to believe his or her
                conduct was lawful or no reasonable cause to believe his or her
                conduct was unlawful;

          (iii) A transaction from which the director, officer, employee or 
                agent derived an improper personal profit; or
<PAGE>
 
          (iv)  Willful misconduct.

     (c)  The termination of any proceeding by judgment, order, settlement,
          conviction, or upon a plea of no contest or its equivalent shall not,
          of itself, create a presumption that the director, officer, employee,
          or agent did not act in good faith and in a manner in which he
          reasonably believed to be in or not opposed to the best interests of
          the Corporation, and with respect to any criminal proceeding, have
          reasonable cause to believe that his conduct was unlawful.

Section 3 - Determination that Indemnification is Proper

     (a)  Unless provided otherwise by a written agreement between the director,
          officer, employee or agent and the Corporation, determination of
          whether indemnification is required under Section 2 shall be made by
          any method set forth in Section 180.0855 of the Wisconsin Statutes, or
          any successor thereto.

     (b)  A director, officer, employee or agent who seeks indemnification under
          this Section shall make a written request to the Corporation. As a
          further precondition to any right to receive indemnification, the
          writing shall contain a declaration that the Corporation shall have
          the right to exercise all rights and remedies available to such
          director, officer, employee or agent against any other person,
          corporation, foreign corporation, partnership, joint venture, trust,
          or other enterprise, arising out of, or related to, the proceeding
          which resulted in the liability and the expense for which such
          director, officer, employee, or agent is seeking indemnification, and
          that the director, officer, employee, or agent is hereby deemed to
          have assigned to the Corporation all such rights and remedies.

     (c)  Indemnification under Subsection 2(a) shall be made within ten (10)
          days of receipt of a written demand for indemnification.
          Indemnification required under Subsection 2(b) shall be made within
          thirty (30) days of receipt of a written demand for indemnification.

     (d)  Indemnification under this Section is not required to the extent the
          director, officer, employee or agent has previously received
          indemnification or allowance of expenses from any person or entity,
          including the Corporation, in connection with the same proceeding.

Section 4 - Allowance of Expenses as Incurred

Upon written request by a director, officer, employee or agent who is a party to
a proceeding, the Corporation shall pay or reimburse his or her reasonable
expenses as incurred if the director, officer, employee or agent provides the
Corporation with all of the following:

     (a)  A written affirmation of his or her good faith belief that he or she 
          is entitled to indemnification under this Article XI; and
<PAGE>
 
     (b)  A written undertaking, executed personally or on his or her behalf, to
          repay all amounts advanced without interest to the extent that it is
          ultimately determined that indemnification under Section 2(b) of this
          Article XI is prohibited.

          The undertaking under this subsection shall be accepted without
          reference to the director's, officer's, employee's or agent's ability
          to repay the allowance. The undertaking shall be unsecured.

Section 5 - Controlled Subsidiaries

All officers, directors, agents and employees of controlled subsidiaries of the
Corporation shall be deemed for purposes of this Article XI to be serving as
officers, directors, agents and employees at the request of the Corporation.
The right to indemnification granted to such officers, directors, agents and
employees by this Article XI shall not be subject to any limitation or
restriction imposed by any provisions of the Articles of Incorporation or Bylaws
of a controlled subsidiary; provided, however, that any right to indemnification
so granted shall be subject to and limited by the laws and regulations of any
applicable regulatory authority to which any controlled subsidiary is subject.
For purposes hereto, a "controlled subsidiary" means any corporation at least
eighty percent (80%) of the outstanding voting stock of which is owned by the
Corporation or another controlled subsidiary of the Corporation.

Section 6 - Insurance

The Corporation shall have the power to purchase and maintain insurance on
behalf of any person who is a director, officer, employee, or agent against any
liability asserted against or incurred by the individual in any such capacity or
arising out of his status as such, regardless of whether the Corporation is
required or authorized to indemnify or allow expenses to the individual under
this Section.

Section 7 - Severability

The provisions of this Article XI shall not apply in any circumstance where a
court of competent jurisdiction determines that indemnification would be invalid
as against public policy.

Section 8 - Amending the Right to Indemnification

The right to indemnification under this Article XI may be amended only by the
shareholders by an affirmative vote of not less than a majority of the shares
present or represented at any annual or special meeting of the shareholders at
which a quorum is in attendance.  Any reduction in the right to indemnification
may only be prospective from the date of such vote.
<PAGE>
 
                                  ARTICLE XII

                                  AMENDMENTS

Alteration, amendment, or repeal of the Bylaws may be made by a majority vote of
the Board of Directors at any regular or special meeting, provided notice of
such alteration, amendment, or repeal has been given to each Director at least
three (3) days prior to the meeting, and provided the shareholders have not in
any particular instance otherwise provided.  Such alteration, amendment, or
repeal may also be made by receiving an affirmative vote of not less than a
majority of the shares present or represented at any annual or special meeting
of the shareholders at which a quorum is in attendance.


                                 ARTICLE XIII

                                    NOTICE

Unless otherwise required by these Bylaws, the Corporation's Articles of
Incorporation or any applicable statute, notice required to be given under these
Bylaws for any purpose may be given by written or oral notice or by notice
communicated in person, by telephone, telegraph, teletype, facsimile, or other
form of wire or wireless communication, or by mail or private carrier, and if
these forms of personal notice are impracticable, notice may be communicated by
a newspaper of general circulation in the area where published, or by radio,
television, or other form of public broadcast communication.  Such notice shall
be effective when mailed if notice is written, or when communicated if notice is
oral or by telephone, or when transmitted if notice is by any other personal
means described in this Section.


                                  ARTICLE XIV

                            EMERGENCY PREPAREDNESS

Section 1 - Emergencies

In the event of an emergency declared by the President of the United States, or
the person performing his functions, or an emergency that is potentially
dangerous to corporate personnel, the officers and employees of Corporation will
continue to conduct the affairs of the Corporation under such guidance from the
Directors as may be available, except as to matters that by statute require
specific approval of the Board of Directors, and subject to conformance with any
governmental directives during the emergency.

Section 2 - Officers Pro Tempore and Disaster

The Board of Directors shall have the power, in the absence or disability of any
officer, or upon the refusal of any officer to act, to delegate and prescribe
such officer's powers and duties to any other officer, or to any director, for
the time being.  In the event of a state of disaster of sufficient severity to
prevent the conduct and management of the affairs and 
<PAGE>
 
business of Corporation by its directors and officers, as contemplated by these
Bylaws, any two (2) or more available members of the then incumbent Executive
Committee shall constitute a quorum of that committee for the full conduct and
management of the affairs and business of the Corporation.

In the event of the unavailability, at such time, of a minimum of two (2)
members of the then incumbent Executive Committee, any three (3) available
directors shall constitute the Executive Committee for the full conduct and
management of the affairs and business of the Corporation in accordance with the
foregoing provisions of this Section.  This Bylaw shall be subject to
implementation by resolution of the Board of Directors passed from time to time
for that purpose, and any provisions of these Bylaws (other than this Section),
and any resolutions that are contrary to the provisions of this Section or to
the provisions of any such implementary resolutions, shall be suspended until it
shall be determined by an interim Executive Committee acting under this Section
that it shall be to the advantage of the Corporation to resume the conduct and
management of its affairs and business under all of the other provisions of
these Bylaws.

Section 3 - Officer Succession

If, because of a disaster or emergency situation, the Chief Executive Officer of
the Corporation cannot be located by the then acting Head Office or is unable to
assume or to continue normal executive duties, then the authority and duties of
the Chief Executive Officer shall, without further action of the Board of
Directors, be automatically assumed by one of the following persons, in the
order designated:  the next most senior corporate officer.  If more than one
person shares the rank of most senior officer in any corporate officer grade,
then time of service with the corporation will determine succession.

Any one of the above-named persons, who in accordance with this resolution
assumes the authority and duties of the Chief Executive Officer, shall continue
to serve until he resigns, or until five-sixths (5/6) of the other officers who
are attached to the then acting Head Office decide in writing he/she is unable
to perform said duties, or until the elected Chief Executive Officer of this
Corporation, or a person higher on the above list, shall become available to
perform the duties of the Chief Executive Officer (see Note 1).

Anyone dealing with the Corporation may accept a certification by any three (3)
officers that a specified individual is acting as Chief Executive Officer in
accordance with this resolution and that anyone accepting such certification may
continue to consider it in force until notified in writing of a change, said
notice of change to carry the signature of three (3) officers of the
Corporation.

Section 4 - Alternate Locations

The offices of the Corporation at which its business shall be conducted shall be
the main office thereof located at 112 North Adams Street, Green Bay, Wisconsin,
and any other legally authorized location that may be leased or acquired by this
Corporation to carry on its business. During an emergency resulting in any
authorized place of business of this Corporation being unable to function, the
business ordinarily conducted at such location shall be relocated 
<PAGE>
 
elsewhere in suitable quarters, in addition to or in lieu of the locations
heretofore mentioned, as may be designated by the Board of Directors or by the
Executive Committee or by such persons as are then, in accordance with
resolutions adopted from time to time by the Board of Directors dealing with the
exercise of authority in the time of such emergency, conducting the affairs of
this Corporation. Any temporarily relocated place of business of this
Corporation shall be returned to its legally authorized location as soon as
practicable, and such temporary place of business shall then be discontinued.

NOTE 1:   The provision for replacing the acting Chief Executive Officer is
          suggested because of the possibility that an individual might be so
          seriously impaired by physical or mental shock as to be incapable of
          fulfilling the duties required by the Chief Executive Officer.
          Presumably, the only group that could sense this situation and would
          be available would be the other officers who are on duty at the acting
          Head Office. The fraction five-sixths (5/6) has been used so that such
          removal could not be made lightly.

At a meeting of the Board of Directors of Associated Banc-Corp held on October
27, 1993, the preceding provisions, constituting the Bylaws of Associated Banc-
Corp, were amended and approved by an affirmative vote of two-thirds (2/3) or
more of the directors present.

     IN TESTIMONY WHEREOF, I, the Chairman, President, and Chief Executive
Officer of Associated Banc-Corp, was present at said meeting, have hereunto
subscribed my name and affixed the Official Seal of the Corporation.


(SEAL)                            __________________________________________
                                  H. B. Conlon, Chairman, President & CEO

<PAGE>
 
                                  EXHIBIT 21
                        Subsidiaries of the Corporation

The following bank subsidiaries are national banks and are organized under the
laws of the United States:
     Associated Bank, National Association
     Associated Bank Green Bay, National Association
     Associated Bank Lakeshore, National Association
     Associated Bank Portage, National Association

The following bank subsidiaries are state banks and are organized under the laws
of the State of Wisconsin:
     Associated Bank Lodi                   Associated Bank North
     Associated Bank Madison                Associated Bank Reedsburg
     Associated Bank Milwaukee              Associated Bank West Allis

The following bank subsidiaries are state banks and are organized under the laws
of the State of Illinois:
     Associated Bank Chicago
     Associated Bank Gladstone-Norwood

The following non-bank subsidiary is a thrift organized under the laws of the
United States:
     First Financial Bank

The following non-bank subsidiaries are organized under the laws of the State of
Wisconsin:
     Associated Banc-Corp Services, Inc.    Associated Leasing, Inc.
     Associated Banc-Shares, Inc.           Associated Mortgage, Inc.
     Associated Commercial Finance, Inc.    Associated Card Services Bank,
     Associated Commercial Mortgage, Inc.    National Association
     Associated Financial Center, Ltd.      Associated Trust Company, National
     Associated Investment Services, Inc.    Association
     First Financial Corporation            Appraisal Services, Inc.
                                            FFS Funding Corp., Inc.

The following non-bank subsidiaries are organized under the laws of the State of
Illinois:
     Associated Illinois Banc-Corp
     Associated Great Northern Mortgage Company
     The Mortgage Man Company

The following non-bank subsidiary is organized under the laws of the State of
Arizona:
     Banc Life Insurance Corporation

The following non-bank subsidiary is organized under the laws of the State of
California:
     Mortgage Finance Corporation

The following non-bank subsidiary is organized under the laws of the State of
Delaware:
     UFS Capital Corporation

The following non-bank subsidiary is organized under the laws of the State of
Missouri:
     Illini Service Corporation

The following non-bank subsidiaries are organized under the laws of the State of
Nevada:
     ASBC Investment Corp - Green Bay       ASBC Investment Corp - Neenah
     ASBC Investment Corp - Lakeshore       ASBC Investment Corp - North
     ASBC Investment Corp - Lodi            ASBC Investment Corp - Portage
     ASBC Investment Corp - Madison         ASBC Investment Corp - Reedsburg
     ASBC Investment Corp - Milwaukee       ASBC Investment Corp - West Allis
     First Financial Investments, Inc.

<PAGE>
 
                                  EXHIBIT 23

                   Consent of Independent Public Accountants
                   -----------------------------------------
 

The Board of Directors
Associated Banc-Corp:

                    Re: Registration Statement on Form S-8
 
                          .  #2-99096    .  #33-16952
                          .  #33-24822   .  #33-35560
                          .  #33-67436   .  #33-86790
                          .  #33-63545   .  #33-54658
                          .  #2-77435    .  #333-46467
 
                    Re: Registration Statement on Form S-3
 
                          .  #2-98922    .  #33-67434
                          .  #33-28081   .  #33-63557

We consent to incorporation by reference in the subject Registration Statements
on Form S-8 and S-3 of Associated Banc-Corp of our report dated January 22,
1998, relating to the consolidated statements of financial condition of
Associated Banc-Corp and subsidiaries as of December 31, 1997 and 1996, and the
related consolidated statements of income, changes in stockholders' equity, and
cash flows for each of the years in the three-year period ended December 31,
1997, which report appears in the December 31, 1997 annual report on Form 10-K
of Associated Banc-Corp.


Chicago, Illinois                              /s/ KPMG Peat Marwick LLP
March 19, 1998

<PAGE>
 
                                  EXHIBIT 24


                         DIRECTOR'S POWER OF ATTORNEY
                         ----------------------------


     KNOW ALL MEN BY THESE PRESENTS, that the undersigned director of Associated
Banc-Corp, a Wisconsin corporation (the "Corporation"), which is planning to
file with the Securities and Exchange Commission (the "SEC"), Washington, D.C.,
under the provisions of the Securities Act of 1934 (the "Act"), a Form 10-K, the
form which must be used for annual reports pursuant to Section 13 or 15(d) of
the Act, and Proxy Statement in accordance with Regulation 14A and Schedule 14A
under the Act and Regulation S-K and Rule 14a-3(b) under the Act, for the
reporting period ending December 31, 1997, hereby constitutes and appoints Brian
R. Bodager his true and lawful attorney-in-fact and agent.

     Said attorney-in-fact and agent shall have full power to act for him and in
his name, place, and stead in any and all capacities, to sign such Form 10-K and
Proxy Statement and any and all amendments thereto (including post-effective
amendments), with power where appropriate to affix the corporate seal of the
Corporation thereto and to attest such seal, and to file such Form 10-K and
Proxy Statement and each amendment (including post-effective amendments) so
signed, with all exhibits thereto, and any and all documents in connection
therewith, with the SEC, and to appear before the SEC in connection with any
matter relating to such Form 10-K and Proxy Statement and to any and all
amendments thereto (including post-effective amendments).

     The undersigned hereby grants such attorney-in-fact and agent full power
and authority to do and perform any and all acts and things requisite and
necessary to be done as he might or could do in person, and hereby ratifies and
confirms all that such attorney-in-fact and agent may lawfully do or cause to be
done by virtue hereof.

     IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney as
of the 28th day of January, 1998.



                                       /s/ Robert S. Gaiswinkler
                                       ----------------------------------------
                                       Robert S. Gaiswinkler
                                       Director
<PAGE>
 
                         DIRECTOR'S POWER OF ATTORNEY
                         ----------------------------


     KNOW ALL MEN BY THESE PRESENTS, that the undersigned director of Associated
Banc-Corp, a Wisconsin corporation (the "Corporation"), which is planning to
file with the Securities and Exchange Commission (the "SEC"), Washington, D.C.,
under the provisions of the Securities Act of 1934 (the "Act"), a Form 10-K, the
form which must be used for annual reports pursuant to Section 13 or 15(d) of
the Act, and Proxy Statement in accordance with Regulation 14A and Schedule 14A
under the Act and Regulation S-K and Rule 14a-3(b) under the Act, for the
reporting period ending December 31, 1997, hereby constitutes and appoints Brian
R. Bodager his true and lawful attorney-in-fact and agent.

     Said attorney-in-fact and agent shall have full power to act for him and in
his name, place, and stead in any and all capacities, to sign such Form 10-K and
Proxy Statement and any and all amendments thereto (including post-effective
amendments), with power where appropriate to affix the corporate seal of the
Corporation thereto and to attest such seal, and to file such Form 10-K and
Proxy Statement and each amendment (including post-effective amendments) so
signed, with all exhibits thereto, and any and all documents in connection
therewith, with the SEC, and to appear before the SEC in connection with any
matter relating to such Form 10-K and Proxy Statement and to any and all
amendments thereto (including post-effective amendments).

     The undersigned hereby grants such attorney-in-fact and agent full power
and authority to do and perform any and all acts and things requisite and
necessary to be done as he might or could do in person, and hereby ratifies and
confirms all that such attorney-in-fact and agent may lawfully do or cause to be
done by virtue hereof.

     IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney as
of the 28th day of January, 1998.



                                       /s/ Robert C. Gallagher
                                       ----------------------------------------
                                       Robert C. Gallagher
                                       Director
<PAGE>
 
                         DIRECTOR'S POWER OF ATTORNEY
                         ----------------------------


     KNOW ALL MEN BY THESE PRESENTS, that the undersigned director of Associated
Banc-Corp, a Wisconsin corporation (the "Corporation"), which is planning to
file with the Securities and Exchange Commission (the "SEC"), Washington, D.C.,
under the provisions of the Securities Act of 1934 (the "Act"), a Form 10-K, the
form which must be used for annual reports pursuant to Section 13 or 15(d) of
the Act, and Proxy Statement in accordance with Regulation 14A and Schedule 14A
under the Act and Regulation S-K and Rule 14a-3(b) under the Act, for the
reporting period ending December 31, 1997, hereby constitutes and appoints Brian
R. Bodager his true and lawful attorney-in-fact and agent.

     Said attorney-in-fact and agent shall have full power to act for him and in
his name, place, and stead in any and all capacities, to sign such Form 10-K and
Proxy Statement and any and all amendments thereto (including post-effective
amendments), with power where appropriate to affix the corporate seal of the
Corporation thereto and to attest such seal, and to file such Form 10-K and
Proxy Statement and each amendment (including post-effective amendments) so
signed, with all exhibits thereto, and any and all documents in connection
therewith, with the SEC, and to appear before the SEC in connection with any
matter relating to such Form 10-K and Proxy Statement and to any and all
amendments thereto (including post-effective amendments).

     The undersigned hereby grants such attorney-in-fact and agent full power
and authority to do and perform any and all acts and things requisite and
necessary to be done as he might or could do in person, and hereby ratifies and
confirms all that such attorney-in-fact and agent may lawfully do or cause to be
done by virtue hereof.

     IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney as
of the 28th day of January, 1998.



                                       /s/ Ronald R. Harder
                                       ----------------------------------------
                                       Ronald R. Harder
                                       Director
<PAGE>
 
                         DIRECTOR'S POWER OF ATTORNEY
                         ----------------------------


     KNOW ALL MEN BY THESE PRESENTS, that the undersigned director of Associated
Banc-Corp, a Wisconsin corporation (the "Corporation"), which is planning to
file with the Securities and Exchange Commission (the "SEC"), Washington, D.C.,
under the provisions of the Securities Act of 1934 (the "Act"), a Form 10-K, the
form which must be used for annual reports pursuant to Section 13 or 15(d) of
the Act, and Proxy Statement in accordance with Regulation 14A and Schedule 14A
under the Act and Regulation S-K and Rule 14a-3(b) under the Act, for the
reporting period ending December 31, 1997, hereby constitutes and appoints Brian
R. Bodager his true and lawful attorney-in-fact and agent.

     Said attorney-in-fact and agent shall have full power to act for him and in
his name, place, and stead in any and all capacities, to sign such Form 10-K and
Proxy Statement and any and all amendments thereto (including post-effective
amendments), with power where appropriate to affix the corporate seal of the
Corporation thereto and to attest such seal, and to file such Form 10-K and
Proxy Statement and each amendment (including post-effective amendments) so
signed, with all exhibits thereto, and any and all documents in connection
therewith, with the SEC, and to appear before the SEC in connection with any
matter relating to such Form 10-K and Proxy Statement and to any and all
amendments thereto (including post-effective amendments).

     The undersigned hereby grants such attorney-in-fact and agent full power
and authority to do and perform any and all acts and things requisite and
necessary to be done as he might or could do in person, and hereby ratifies and
confirms all that such attorney-in-fact and agent may lawfully do or cause to be
done by virtue hereof.

     IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney as
of the 28th day of January, 1998.



                                       /s/ John S. Holbrook Jr.
                                       ----------------------------------------
                                       John S. Holbrook Jr.
                                       Director
<PAGE>
 
                         DIRECTOR'S POWER OF ATTORNEY
                         ----------------------------


     KNOW ALL MEN BY THESE PRESENTS, that the undersigned director of Associated
Banc-Corp, a Wisconsin corporation (the "Corporation"), which is planning to
file with the Securities and Exchange Commission (the "SEC"), Washington, D.C.,
under the provisions of the Securities Act of 1934 (the "Act"), a Form 10-K, the
form which must be used for annual reports pursuant to Section 13 or 15(d) of
the Act, and Proxy Statement in accordance with Regulation 14A and Schedule 14A
under the Act and Regulation S-K and Rule 14a-3(b) under the Act, for the
reporting period ending December 31, 1997, hereby constitutes and appoints Brian
R. Bodager his true and lawful attorney-in-fact and agent.

     Said attorney-in-fact and agent shall have full power to act for him and in
his name, place, and stead in any and all capacities, to sign such Form 10-K and
Proxy Statement and any and all amendments thereto (including post-effective
amendments), with power where appropriate to affix the corporate seal of the
Corporation thereto and to attest such seal, and to file such Form 10-K and
Proxy Statement and each amendment (including post-effective amendments) so
signed, with all exhibits thereto, and any and all documents in connection
therewith, with the SEC, and to appear before the SEC in connection with any
matter relating to such Form 10-K and Proxy Statement and to any and all
amendments thereto (including post-effective amendments).

     The undersigned hereby grants such attorney-in-fact and agent full power
and authority to do and perform any and all acts and things requisite and
necessary to be done as he might or could do in person, and hereby ratifies and
confirms all that such attorney-in-fact and agent may lawfully do or cause to be
done by virtue hereof.

     IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney as
of the 28th day of January, 1998.



                                       /s/ William R. Hutchinson
                                       ----------------------------------------
                                       William R. Hutchinson
                                       Director
<PAGE>
 
                         DIRECTOR'S POWER OF ATTORNEY
                         ----------------------------


     KNOW ALL MEN BY THESE PRESENTS, that the undersigned director of Associated
Banc-Corp, a Wisconsin corporation (the "Corporation"), which is planning to
file with the Securities and Exchange Commission (the "SEC"), Washington, D.C.,
under the provisions of the Securities Act of 1934 (the "Act"), a Form 10-K, the
form which must be used for annual reports pursuant to Section 13 or 15(d) of
the Act, and Proxy Statement in accordance with Regulation 14A and Schedule 14A
under the Act and Regulation S-K and Rule 14a-3(b) under the Act, for the
reporting period ending December 31, 1997, hereby constitutes and appoints Brian
R. Bodager his true and lawful attorney-in-fact and agent.

     Said attorney-in-fact and agent shall have full power to act for him and in
his name, place, and stead in any and all capacities, to sign such Form 10-K and
Proxy Statement and any and all amendments thereto (including post-effective
amendments), with power where appropriate to affix the corporate seal of the
Corporation thereto and to attest such seal, and to file such Form 10-K and
Proxy Statement and each amendment (including post-effective amendments) so
signed, with all exhibits thereto, and any and all documents in connection
therewith, with the SEC, and to appear before the SEC in connection with any
matter relating to such Form 10-K and Proxy Statement and to any and all
amendments thereto (including post-effective amendments).

     The undersigned hereby grants such attorney-in-fact and agent full power
and authority to do and perform any and all acts and things requisite and
necessary to be done as he might or could do in person, and hereby ratifies and
confirms all that such attorney-in-fact and agent may lawfully do or cause to be
done by virtue hereof.

     IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney as
of the 28th day of January, 1998.



                                       /s/ Robert P. Konopacky
                                       ----------------------------------------
                                       Robert P. Konopacky
                                       Director
<PAGE>
 
                         DIRECTOR'S POWER OF ATTORNEY
                         ----------------------------


     KNOW ALL MEN BY THESE PRESENTS, that the undersigned director of Associated
Banc-Corp, a Wisconsin corporation (the "Corporation"), which is planning to
file with the Securities and Exchange Commission (the "SEC"), Washington, D.C.,
under the provisions of the Securities Act of 1934 (the "Act"), a Form 10-K, the
form which must be used for annual reports pursuant to Section 13 or 15(d) of
the Act, and Proxy Statement in accordance with Regulation 14A and Schedule 14A
under the Act and Regulation S-K and Rule 14a-3(b) under the Act, for the
reporting period ending December 31, 1997, hereby constitutes and appoints Brian
R. Bodager his true and lawful attorney-in-fact and agent.

     Said attorney-in-fact and agent shall have full power to act for him and in
his name, place, and stead in any and all capacities, to sign such Form 10-K and
Proxy Statement and any and all amendments thereto (including post-effective
amendments), with power where appropriate to affix the corporate seal of the
Corporation thereto and to attest such seal, and to file such Form 10-K and
Proxy Statement and each amendment (including post-effective amendments) so
signed, with all exhibits thereto, and any and all documents in connection
therewith, with the SEC, and to appear before the SEC in connection with any
matter relating to such Form 10-K and Proxy Statement and to any and all
amendments thereto (including post-effective amendments).

     The undersigned hereby grants such attorney-in-fact and agent full power
and authority to do and perform any and all acts and things requisite and
necessary to be done as he might or could do in person, and hereby ratifies and
confirms all that such attorney-in-fact and agent may lawfully do or cause to be
done by virtue hereof.

     IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney as
of the 28th day of January, 1998.



                                       /s/ George R. Leach
                                       ----------------------------------------
                                       George R. Leach
                                       Director
<PAGE>
 
                         DIRECTOR'S POWER OF ATTORNEY
                         ----------------------------


     KNOW ALL MEN BY THESE PRESENTS, that the undersigned director of Associated
Banc-Corp, a Wisconsin corporation (the "Corporation"), which is planning to
file with the Securities and Exchange Commission (the "SEC"), Washington, D.C.,
under the provisions of the Securities Act of 1934 (the "Act"), a Form 10-K, the
form which must be used for annual reports pursuant to Section 13 or 15(d) of
the Act, and Proxy Statement in accordance with Regulation 14A and Schedule 14A
under the Act and Regulation S-K and Rule 14a-3(b) under the Act, for the
reporting period ending December 31, 1997, hereby constitutes and appoints Brian
R. Bodager his true and lawful attorney-in-fact and agent.

     Said attorney-in-fact and agent shall have full power to act for him and in
his name, place, and stead in any and all capacities, to sign such Form 10-K and
Proxy Statement and any and all amendments thereto (including post-effective
amendments), with power where appropriate to affix the corporate seal of the
Corporation thereto and to attest such seal, and to file such Form 10-K and
Proxy Statement and each amendment (including post-effective amendments) so
signed, with all exhibits thereto, and any and all documents in connection
therewith, with the SEC, and to appear before the SEC in connection with any
matter relating to such Form 10-K and Proxy Statement and to any and all
amendments thereto (including post-effective amendments).

     The undersigned hereby grants such attorney-in-fact and agent full power
and authority to do and perform any and all acts and things requisite and
necessary to be done as he might or could do in person, and hereby ratifies and
confirms all that such attorney-in-fact and agent may lawfully do or cause to be
done by virtue hereof.

     IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney as
of the 28th day of January, 1998.



                                       /s/ John C. Meng
                                       ----------------------------------------
                                       John C. Meng
                                       Director
<PAGE>
 
                         DIRECTOR'S POWER OF ATTORNEY
                         ----------------------------


     KNOW ALL MEN BY THESE PRESENTS, that the undersigned director of Associated
Banc-Corp, a Wisconsin corporation (the "Corporation"), which is planning to
file with the Securities and Exchange Commission (the "SEC"), Washington, D.C.,
under the provisions of the Securities Act of 1934 (the "Act"), a Form 10-K, the
form which must be used for annual reports pursuant to Section 13 or 15(d) of
the Act, and Proxy Statement in accordance with Regulation 14A and Schedule 14A
under the Act and Regulation S-K and Rule 14a-3(b) under the Act, for the
reporting period ending December 31, 1997, hereby constitutes and appoints Brian
R. Bodager his true and lawful attorney-in-fact and agent.

     Said attorney-in-fact and agent shall have full power to act for him and in
his name, place, and stead in any and all capacities, to sign such Form 10-K and
Proxy Statement and any and all amendments thereto (including post-effective
amendments), with power where appropriate to affix the corporate seal of the
Corporation thereto and to attest such seal, and to file such Form 10-K and
Proxy Statement and each amendment (including post-effective amendments) so
signed, with all exhibits thereto, and any and all documents in connection
therewith, with the SEC, and to appear before the SEC in connection with any
matter relating to such Form 10-K and Proxy Statement and to any and all
amendments thereto (including post-effective amendments).

     The undersigned hereby grants such attorney-in-fact and agent full power
and authority to do and perform any and all acts and things requisite and
necessary to be done as he might or could do in person, and hereby ratifies and
confirms all that such attorney-in-fact and agent may lawfully do or cause to be
done by virtue hereof.

     IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney as
of the 28th day of January, 1998.



                                       /s/ J. Douglas Quick
                                       ----------------------------------------
                                       J. Douglas Quick
                                       Director
<PAGE>
 
                         DIRECTOR'S POWER OF ATTORNEY
                         ----------------------------


     KNOW ALL MEN BY THESE PRESENTS, that the undersigned director of Associated
Banc-Corp, a Wisconsin corporation (the "Corporation"), which is planning to
file with the Securities and Exchange Commission (the "SEC"), Washington, D.C.,
under the provisions of the Securities Act of 1934 (the "Act"), a Form 10-K, the
form which must be used for annual reports pursuant to Section 13 or 15(d) of
the Act, and Proxy Statement in accordance with Regulation 14A and Schedule 14A
under the Act and Regulation S-K and Rule 14a-3(b) under the Act, for the
reporting period ending December 31, 1997, hereby constitutes and appoints Brian
R. Bodager his true and lawful attorney-in-fact and agent.

     Said attorney-in-fact and agent shall have full power to act for him and in
his name, place, and stead in any and all capacities, to sign such Form 10-K and
Proxy Statement and any and all amendments thereto (including post-effective
amendments), with power where appropriate to affix the corporate seal of the
Corporation thereto and to attest such seal, and to file such Form 10-K and
Proxy Statement and each amendment (including post-effective amendments) so
signed, with all exhibits thereto, and any and all documents in connection
therewith, with the SEC, and to appear before the SEC in connection with any
matter relating to such Form 10-K and Proxy Statement and to any and all
amendments thereto (including post-effective amendments).

     The undersigned hereby grants such attorney-in-fact and agent full power
and authority to do and perform any and all acts and things requisite and
necessary to be done as he might or could do in person, and hereby ratifies and
confirms all that such attorney-in-fact and agent may lawfully do or cause to be
done by virtue hereof.

     IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney as
of the 28th day of January, 1998.



                                       /s/ John C. Seramur
                                       ----------------------------------------
                                       John C. Seramur
                                       Director
<PAGE>
 
                         DIRECTOR'S POWER OF ATTORNEY
                         ----------------------------


     KNOW ALL MEN BY THESE PRESENTS, that the undersigned director of Associated
Banc-Corp, a Wisconsin corporation (the "Corporation"), which is planning to
file with the Securities and Exchange Commission (the "SEC"), Washington, D.C.,
under the provisions of the Securities Act of 1934 (the "Act"), a Form 10-K, the
form which must be used for annual reports pursuant to Section 13 or 15(d) of
the Act, and Proxy Statement in accordance with Regulation 14A and Schedule 14A
under the Act and Regulation S-K and Rule 14a-3(b) under the Act, for the
reporting period ending December 31, 1997, hereby constitutes and appoints Brian
R. Bodager his true and lawful attorney-in-fact and agent.

     Said attorney-in-fact and agent shall have full power to act for him and in
his name, place, and stead in any and all capacities, to sign such Form 10-K and
Proxy Statement and any and all amendments thereto (including post-effective
amendments), with power where appropriate to affix the corporate seal of the
Corporation thereto and to attest such seal, and to file such Form 10-K and
Proxy Statement and each amendment (including post-effective amendments) so
signed, with all exhibits thereto, and any and all documents in connection
therewith, with the SEC, and to appear before the SEC in connection with any
matter relating to such Form 10-K and Proxy Statement and to any and all
amendments thereto (including post-effective amendments).

     The undersigned hereby grants such attorney-in-fact and agent full power
and authority to do and perform any and all acts and things requisite and
necessary to be done as he might or could do in person, and hereby ratifies and
confirms all that such attorney-in-fact and agent may lawfully do or cause to be
done by virtue hereof.

     IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney as
of the 28th day of January, 1998.



                                       /s/ John H. Sproule
                                       ----------------------------------------
                                       John H. Sproule
                                       Director
<PAGE>
 
                         DIRECTOR'S POWER OF ATTORNEY
                         ----------------------------


     KNOW ALL MEN BY THESE PRESENTS, that the undersigned director of Associated
Banc-Corp, a Wisconsin corporation (the "Corporation"), which is planning to
file with the Securities and Exchange Commission (the "SEC"), Washington, D.C.,
under the provisions of the Securities Act of 1934 (the "Act"), a Form 10-K, the
form which must be used for annual reports pursuant to Section 13 or 15(d) of
the Act, and Proxy Statement in accordance with Regulation 14A and Schedule 14A
under the Act and Regulation S-K and Rule 14a-3(b) under the Act, for the
reporting period ending December 31, 1997, hereby constitutes and appoints Brian
R. Bodager his true and lawful attorney-in-fact and agent.

     Said attorney-in-fact and agent shall have full power to act for him and in
his name, place, and stead in any and all capacities, to sign such Form 10-K and
Proxy Statement and any and all amendments thereto (including post-effective
amendments), with power where appropriate to affix the corporate seal of the
Corporation thereto and to attest such seal, and to file such Form 10-K and
Proxy Statement and each amendment (including post-effective amendments) so
signed, with all exhibits thereto, and any and all documents in connection
therewith, with the SEC, and to appear before the SEC in connection with any
matter relating to such Form 10-K and Proxy Statement and to any and all
amendments thereto (including post-effective amendments).

     The undersigned hereby grants such attorney-in-fact and agent full power
and authority to do and perform any and all acts and things requisite and
necessary to be done as he might or could do in person, and hereby ratifies and
confirms all that such attorney-in-fact and agent may lawfully do or cause to be
done by virtue hereof.

     IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney as
of the 28th day of January, 1998.



                                       /s/ Ralph R. Staven
                                       ----------------------------------------
                                       Ralph R. Staven
                                       Director
<PAGE>
 
                         DIRECTOR'S POWER OF ATTORNEY
                         ----------------------------


     KNOW ALL MEN BY THESE PRESENTS, that the undersigned director of Associated
Banc-Corp, a Wisconsin corporation (the "Corporation"), which is planning to
file with the Securities and Exchange Commission (the "SEC"), Washington, D.C.,
under the provisions of the Securities Act of 1934 (the "Act"), a Form 10-K, the
form which must be used for annual reports pursuant to Section 13 or 15(d) of
the Act, and Proxy Statement in accordance with Regulation 14A and Schedule 14A
under the Act and Regulation S-K and Rule 14a-3(b) under the Act, for the
reporting period ending December 31, 1997, hereby constitutes and appoints Brian
R. Bodager his true and lawful attorney-in-fact and agent.

     Said attorney-in-fact and agent shall have full power to act for him and in
his name, place, and stead in any and all capacities, to sign such Form 10-K and
Proxy Statement and any and all amendments thereto (including post-effective
amendments), with power where appropriate to affix the corporate seal of the
Corporation thereto and to attest such seal, and to file such Form 10-K and
Proxy Statement and each amendment (including post-effective amendments) so
signed, with all exhibits thereto, and any and all documents in connection
therewith, with the SEC, and to appear before the SEC in connection with any
matter relating to such Form 10-K and Proxy Statement and to any and all
amendments thereto (including post-effective amendments).

     The undersigned hereby grants such attorney-in-fact and agent full power
and authority to do and perform any and all acts and things requisite and
necessary to be done as he might or could do in person, and hereby ratifies and
confirms all that such attorney-in-fact and agent may lawfully do or cause to be
done by virtue hereof.

     IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney as
of the 28th day of January, 1998.



                                       /s/ Norman L. Wanta
                                       ----------------------------------------
                                       Norman L. Wanta
                                       Director

<TABLE> <S> <C>

<PAGE>
 
<ARTICLE> 9
<CIK>      0000007789
<NAME>     ASSOCIATED BANC-CORP
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-END>                               DEC-31-1997
<CASH>                                         288,021
<INT-BEARING-DEPOSITS>                           4,154
<FED-FUNDS-SOLD>                                11,511
<TRADING-ASSETS>                                     0
<INVESTMENTS-HELD-FOR-SALE>                  2,167,694
<INVESTMENTS-CARRYING>                         772,524
<INVESTMENTS-MARKET>                           782,240
<LOANS>                                      7,076,576
<ALLOWANCE>                                   (92,731)
<TOTAL-ASSETS>                              10,691,439
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<LIABILITIES-OTHER>                            161,331
<LONG-TERM>                                     15,270
<COMMON>                                             0
                                0
                                    813,693
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<TOTAL-LIABILITIES-AND-EQUITY>              10,691,439
<INTEREST-LOAN>                                592,071
<INTEREST-INVEST>                              193,395
<INTEREST-OTHER>                                 1,778
<INTEREST-TOTAL>                               787,244
<INTEREST-DEPOSIT>                             337,443
<INTEREST-EXPENSE>                             411,637
<INTEREST-INCOME-NET>                          375,607
<LOAN-LOSSES>                                   31,668
<SECURITIES-GAINS>                            (32,776)
<EXPENSE-OTHER>                                323,647
<INCOME-PRETAX>                                116,268
<INCOME-PRE-EXTRAORDINARY>                      52,359
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    52,359
<EPS-PRIMARY>                                     1.04
<EPS-DILUTED>                                     1.02
<YIELD-ACTUAL>                                    8.01
<LOANS-NON>                                     32,688
<LOANS-PAST>                                     1,324
<LOANS-TROUBLED>                                   558
<LOANS-PROBLEM>                                 73,963
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<CHARGE-OFFS>                                   15,049
<RECOVERIES>                                     3,616
<ALLOWANCE-CLOSE>                               92,731
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</TABLE>


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