MARSHALL & ILSLEY CORP/WI/
DEF 14A, 1998-03-10
NATIONAL COMMERCIAL BANKS
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<PAGE>
 
                           SCHEDULE 14A INFORMATION

   Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act 
                          of 1934 (Amendment No. ___)

Filed by the Registrant [X]
Filed by a Party other than the Registrant [ ]

Check the appropriate box:

     [ ]   Preliminary Proxy Statement
     [ ]   Confidential, for Use of the Commission Only (as permitted by Rule 
           14a-6(e)(2))
     [X]   Definitive Proxy Statement
     [ ]   Definitive Additional Materials
     [ ]   Soliciting Material Pursuant to (S)240.14a-11(c) or (S)240.14a-12

                         Marshall & Ilsley Corporation
               ------------------------------------------------
               (Name of Registrant as Specified in Its Charter)

    -----------------------------------------------------------------------
    (Name of Person(s) Filing Proxy Statement if other than the Registrant)


Payment of Filing Fee (Check the appropriate box):

     [X]   No fee required.

     [ ]   Fee computed on table below per Exchange Act Rules 14a-6(i)(4) 
           and 0-11.

           1)  Title of each class of securities to which transaction applies:

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

           2)  Aggregate number of securities to which transaction applies:

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

           3)  Per unit price or other underlying value of transaction computed
               pursuant to Exchange Act Rule 0-11 (Set forth the amount on which
               the filing fee is calculated and state how it was determined):

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

           4)  Proposed maximum aggregate value of transaction:

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

           5)  Total fee paid:

     [ ]   Fee paid previously with preliminary materials.

     [ ]   Check box if any part of the fee is offset as provided by Exchange
           Act Rule 0-11(a)(2) and identify the filing for which the offsetting
           fee was paid previously. Identify the previous filing by registration
           statement number, or the Form or Schedule and the date of it filing.

           1)  Amount Previously Paid:

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           2)  Form, Schedule or Registration Statement No.:

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           3)  Filing Party:

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           4)  Date Filed:

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<PAGE>
 
                         MARSHALL & ILSLEY CORPORATION
                            770 NORTH WATER STREET
                          MILWAUKEE, WISCONSIN 53202
 
                               ----------------
 
                   NOTICE OF ANNUAL MEETING OF SHAREHOLDERS
 
                                APRIL 28, 1998
 
To the Shareholders of Marshall & Ilsley Corporation:
 
  The 1998 Annual Meeting of Shareholders of Marshall & Ilsley Corporation
will be held at the Milwaukee Athletic Club, 758 North Broadway, Grand
Ballroom, 4th Floor, Milwaukee, Wisconsin, on Tuesday, April 28, 1998 at 10:00
a.m., local time, for the following purposes:
 
(1) To elect seven Directors to serve until the 2001 Annual Meeting of
    Shareholders and until their successors are elected and qualified;
 
(2) To approve amendments to the Marshall & Ilsley Corporation 1994 Long-Term
    Incentive Plan for Executives and a change to the performance goals
    thereunder;
 
(3) To approve the Marshall & Ilsley Corporation Directors Deferred
    Compensation Plan; and
 
(4) To transact such other business as may properly come before the Annual
    Meeting, all in accordance with the accompanying Proxy Statement.
 
  Shareholders of record at the close of business on February 27, 1998 are
entitled to notice of and to vote at the Annual Meeting.
 
  HOLDERS OF A MAJORITY OF THE OUTSTANDING SHARES MUST BE PRESENT IN PERSON OR
BY PROXY IN ORDER FOR THE MEETING TO BE HELD. THEREFORE, SHAREHOLDERS ARE
URGED TO DATE, SIGN AND RETURN THE ACCOMPANYING PROXY IN THE ENCLOSED ENVELOPE
WHETHER OR NOT THEY EXPECT TO ATTEND THE ANNUAL MEETING IN PERSON. IF YOU
ATTEND THE MEETING AND WISH TO VOTE YOUR SHARES PERSONALLY, YOU MAY DO SO BY
REVOKING YOUR PROXY AT ANY TIME PRIOR TO THE VOTING THEREOF.
 
                                          M. A. HATFIELD, Secretary
 
March 9, 1998
<PAGE>
 
                         MARSHALL & ILSLEY CORPORATION
                            770 NORTH WATER STREET
                          MILWAUKEE, WISCONSIN 53202
                                 MARCH 9, 1998
 
                                PROXY STATEMENT
 
  The enclosed proxy is solicited by the Board of Directors of Marshall &
Ilsley Corporation (the "Company" or "M&I") for use at the Annual Meeting of
Shareholders to be held on Tuesday, April 28, 1998 (the "Annual Meeting"). At
the Annual Meeting, the shareholders of the Company will elect seven Class II
Directors, each of whom will hold office until April 2001, and with respect to
each Director, until his successor is elected and qualified. The Company's
shareholders also will be asked to approve amendments to the Company's 1994
Long-Term Incentive Plan for Executives (the "LTIP") and to approve the
Company's Directors Deferred Compensation Plan.
 
  The expense of printing and mailing proxy materials, including expenses
involved in forwarding materials to beneficial owners of common stock held in
the name of another person, will be borne by the Company. No solicitation
other than by mail is contemplated, except that officers or employees of the
Company or its subsidiaries may solicit the return of proxies from certain
shareholders by telephone. In addition, the Company has retained Murrow & Co.,
Inc. to assist in the solicitation of proxies for a fee of approximately
$6,500. The Proxy Statement and the accompanying Proxy are being sent to the
Company's shareholders commencing on or about March 9, 1998.
 
  Each shareholder of record at the close of business on February 27, 1998
will be entitled to one vote for each share of common stock registered in such
shareholder's name. The Company has two classes of capital stock outstanding:
its $1.00 par value common stock (the "Common Stock") and its non-voting
Series A preferred stock (the "Preferred Stock"). As of February 27, 1998, the
Company had outstanding 101,742,948 shares of Common Stock and 685,314 shares
of Preferred Stock. The presence, in person or by proxy, of the holders of a
majority of the shares of the Common Stock outstanding on the record date is
required for a quorum with respect to the matters on which action is to be
taken at the Annual Meeting.
 
  Any shareholder executing and delivering the enclosed proxy may revoke the
same at any time prior to the voting thereof by written notice of revocation
given to the Secretary of the Company.
 
  The Company has instituted the Dividend Reinvestment and Cash Investment
Plan (the "Reinvestment Plan") administered by BankBoston, N.A., as Trustee.
Under the provisions of the Reinvestment Plan, shares of Common Stock are
acquired and held in nominee name by BankBoston, N.A. for participating
shareholders. Shares so held have been separately designated on the proxy card
pertaining to each participant and will be voted at the Annual Meeting in the
same manner in which the participant votes those shares registered in his or
her own name either by proxy or in person.
 
  The Company's Annual Report on Form 10-K for the fiscal year ended December
31, 1997, is included with this Proxy Statement.
 
  UNLESS OTHERWISE DIRECTED, ALL PROXIES WILL BE VOTED FOR THE ELECTION OF
EACH OF THE INDIVIDUALS NOMINATED TO SERVE AS A CLASS II DIRECTOR, FOR
APPROVAL OF THE AMENDMENTS TO THE LTIP AND FOR APPROVAL OF THE DIRECTORS
DEFERRED COMPENSATION PLAN. ABSTENTIONS AND BROKER NON-VOTES (I.E., PROXIES
FROM BROKERS OR NOMINEES INDICATING THAT SUCH PERSONS HAVE NOT RECEIVED
INSTRUCTIONS FROM THE BENEFICIAL OWNERS TO VOTE SHARES AS TO A MATTER WITH
RESPECT TO WHICH THE BROKERS OR NOMINEES DO NOT HAVE DISCRETIONARY POWER TO
VOTE) WILL BE TREATED AS PRESENT FOR PURPOSES OF DETERMINING A QUORUM.
DIRECTORS ARE ELECTED BY A PLURALITY OF THE VOTES CAST BY HOLDERS OF THE
COMPANY'S COMMON STOCK ENTITLED TO VOTE AT A MEETING AT WHICH A QUORUM IS
PRESENT. IN OTHER WORDS, THE SEVEN DIRECTORS WHO RECEIVE THE LARGEST NUMBER OF
VOTES WILL BE ELECTED AS DIRECTORS. ANY SHARES NOT VOTED, WHETHER BY WITHHELD
AUTHORITY, BROKER
<PAGE>
 
NON-VOTE OR OTHERWISE, WILL HAVE NO EFFECT IN THE ELECTION OF DIRECTORS EXCEPT
TO THE EXTENT THAT THE FAILURE TO VOTE FOR AN INDIVIDUAL RESULTS IN ANOTHER
INDIVIDUAL RECEIVING A LARGER NUMBER OF VOTES. ANY VOTES ATTEMPTED TO BE CAST
"AGAINST" A CANDIDATE ARE NOT GIVEN LEGAL EFFECT AND ARE NOT COUNTED AS VOTES
CAST IN AN ELECTION OF DIRECTORS. THE AFFIRMATIVE VOTE OF A MAJORITY OF THE
SHARES PRESENT OR REPRESENTED AND ENTITLED TO VOTE IS REQUIRED TO APPROVE THE
AMENDMENTS TO THE LTIP AND THE DIRECTORS DEFERRED COMPENSATION PLAN AND BROKER
NON-VOTES WILL NOT BE COUNTED AS SHARES ENTITLED TO VOTE ON THE PROPOSAL.
 
                SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS
 
  The following table lists as of February 27, 1998 information regarding the
beneficial ownership of shares of Common Stock by each director and named
executive officer of the Company, each person believed by the Company to be a
beneficial owner of more than 5% of Common Stock and all directors and
executive officers of the Company as a group:
 
<TABLE>
<CAPTION>
             NAME AND ADDRESS           AMOUNT AND NATURE OF
            OF BENEFICIAL OWNER        BENEFICIAL OWNERSHIP(1) PERCENT OF CLASS
            -------------------        ----------------------  ----------------
      <S>                              <C>                     <C>
      Marshall & Ilsley Trust Company        11,217,029(2)          11.02%
       1000 North Water Street
       Milwaukee, WI 53202
      The Northwestern Mutual Life            8,665,374(3)           7.92%
       Insurance Company
       720 East Wisconsin Avenue
       Milwaukee, WI 53202
      Richard A. Abdoo                            7,500(4)            *
      Oscar C. Boldt                             97,816(5)            *
      J.P. Bolduc                                10,000(6)            *
      Wendell F. Bueche                          22,800(7)            *
      Jon F. Chait                               25,987(4)            *
      J.L. Delgadillo                            56,004(8)            *
      Glenn A. Francke                          200,283(6)            *
      G.H. Gunnlaugsson                         278,442(9)            *
      Burleigh E. Jacobs                         48,000(6)            *
      Jack F. Kellner                           503,202(4)            *
      James F. Kress                             20,500(6)            *
      D.J. Kuester                              456,318(10)           *
      D.W. Layden, Jr.                           29,600(11)           *
      Katharine C. Lyall                            350               *
      Edward L. Meyer, Jr.                       24,751(12)           *
      Don R. O'Hare                              16,306(4)            *
      San W. Orr, Jr.                           217,326(13)           *
      P.M. Platten, III                         347,133(14)           *
      J.A. Puelicher                            451,156(15)           *
      Robert A. Schaefer                         64,732(16)           *
      Stuart W. Tisdale                          11,280(4)            *
      J.B. Wigdale                              617,587(17)           *
      James O. Wright                            17,220(18)           *
      Gus A. Zuehlke                            161,895(19)           *
</TABLE>
 
  All directors and executive officers of the Company as a group (30 persons,
including the above) own 5,428,291 shares of Common Stock or 5.33% of the
total Common Stock outstanding.(20)
- --------
*less than 1%
(1) Except as indicated below, all shares shown in the table are owned with
    sole voting and investment power.
 
                                       2
<PAGE>
 
(2) This information is based on Amendment No. 17 to Schedule 13-G dated
    February 13, 1998. All such shares are owned by Marshall & Ilsley Trust
    Company (the "Trust Company") as trustee or in other fiduciary capacities.
    The Trust Company has no economic interest in such shares. Of these
    shares, the Trust Company has sole voting power as to 1,366,211 shares
    (approximately 1.3%), shared voting power as to 6,562,641 shares
    (approximately 6.5%), sole investment power as to 3,719,816 shares
    (approximately 3.7%), and shared investment power as to 7,505,960 shares
    (approximately 7.4%). The amount and percentage of shares beneficially
    owned, and the amount of shares as to which the Trust Company has shared
    voting or investment power, include 6,440,795 shares held by the Trust
    Company as to which it disclaims beneficial ownership. The Company owns
    all of the issued and outstanding capital stock of the Trust Company.
(3) This information is based on Amendment No. 10 to Schedule 13-G dated
    February 9, 1998. The Northwestern Mutual Life Insurance Company ("NML")
    holds 988,188 shares of Common Stock and 685,314 shares of Preferred
    Stock. NML has sole voting and investment power as to all such shares,
    subject to the terms and conditions of a certain Investment Agreement (the
    "Investment Agreement") between the Company and NML dated August 30, 1985.
    NML may exchange shares of Common Stock, regardless of how they were
    acquired, for shares of Preferred Stock. The Preferred Stock is non-voting
    and convertible into 7,677,185 shares of Common Stock at the same ratio
    that the Common Stock was exchanged for the Preferred Stock. The
    Investment Agreement provides for the purchase by NML of up to 24.9%, on a
    fully diluted basis, of the Common Stock. Purchases may take the form of
    Common Stock, Preferred Stock, notes or other securities of the Company
    (the "Securities") at such prices as may be agreed upon by the parties
    from time to time. The Investment Agreement restricts in certain respects
    NML's right to transfer, acquire and vote any Securities. Under certain
    conditions, NML may require the Company to repurchase its stock at not
    less than prescribed prices after a "Change-in-Control" or upon the
    occurrence of a "Business Combination" (as such terms are defined in the
    Investment Agreement). For further information concerning the Investment
    Agreement, the Notes and the Preferred Stock, reference is hereby made to
    the Company's Current Reports on Form 8-K dated May 20, 1985, August 30,
    1985 and January 2, 1986.
(4) Includes 7,500 shares which could be acquired pursuant to the exercise of
    stock options within sixty days of February 27, 1998.
(5) Includes 32,909 shares held by Mr. Boldt's family as to which he disclaims
    beneficial ownership, 5,000 shares as to which he exercises sole voting
    power and 22,909 shares which could be acquired pursuant to the exercise
    of stock options within sixty days of February 27, 1998.
(6) Includes 10,000 shares which could be acquired pursuant to the exercise of
    stock options within sixty days of February 27, 1998.
(7) Includes 12,500 shares which could be acquired pursuant to the exercise of
    stock options within sixty days of February 27, 1998.
(8) Includes 35,000 shares which could be acquired pursuant to the exercise of
    stock options within sixty days of February 27, 1998.
(9) Includes 2,700 shares held by Mr. Gunnlaugsson's family as to which he
    disclaims beneficial ownership and 144,750 shares which could be acquired
    pursuant to the exercise of stock options within sixty days of February
    27, 1998.
(10) Includes 5,000 shares as to which Mr. Kuester exercises sole voting
     power, and 293,000 shares which could be acquired pursuant to the
     exercise of stock options within sixty days of February 27, 1998.
(11) Includes 24,000 shares which could be acquired pursuant to the exercise
     of stock options within sixty days of February 27, 1998.
(12) Includes 1,337 shares held by Mr. Meyer's family as to which he disclaims
     beneficial ownership, 1,000 shares as to which he exercises sole voting
     power and 20,400 shares which could be acquired pursuant to the exercise
     of stock options within sixty days of February 27, 1998.
(13) Includes 198,387 shares held by trusts for which Mr. Orr exercises shared
     voting and investment power and as to which Mr. Orr disclaims beneficial
     ownership, and 7,500 shares which could be acquired pursuant to the
     exercise of stock options within sixty days of February 27, 1998.
 
                                       3
<PAGE>
 
(14) Includes 5,443 shares held by Mr. Platten's family as to which he
     disclaims beneficial ownership, 181,246 shares as to which Mr. Platten
     exercises sole voting power and 50,000 shares of which could be acquired
     pursuant to the exercise of stock options within sixty days of February
     27, 1998.
(15) Includes 103,556 shares as to which Mr. Puelicher exercises sole voting
     power and 58,182 shares held by trust from which he exercises shared
     voting and investment power and as to which he disclaims beneficial
     ownership.
(16) Includes 21,490 shares as to which Mr. Schaefer disclaims beneficial
     ownership.
(17) Includes 11,678 shares held by Mr. Wigdale's family as to which he
     disclaims beneficial ownership and 401,000 shares which could be acquired
     pursuant to the exercise of stock options within sixty days of February
     27, 1998.
(18) Includes 10,500 shares which could be acquired pursuant to the exercise
     of stock options within sixty days of February 27, 1998, 3,120 shares
     held by trust for which Mr. Wright exercises shared voting and investment
     power and as to which he disclaims beneficial ownership and 500 shares
     owned by Badger Meter Foundation as to which he disclaims beneficial
     ownership.
(19) Includes 11,771 shares held by Mr. Zuehlke's family as to which he
     disclaims beneficial ownership, 45,819 shares as to which Mr. Zuehlke
     exercises sole voting power, and 10,000 shares which could be acquired
     pursuant to the exercise of stock options within sixty days of February
     27, 1998.
(20) Includes 7,400 shares of restricted stock as to which the holders
     exercise sole voting power and 1,277,950 shares which could be acquired
     pursuant to the exercise of stock options within sixty days of February
     27, 1998.
 
                             ELECTION OF DIRECTORS
 
  The Company's Restated Articles of Incorporation provide that the Company's
Directors are divided into three classes, designated Class I, Class II and
Class III, with staggered terms of three years each. At the Annual Meeting,
shareholders will elect seven Class II Directors to serve until the Company's
2001 Annual Meeting of Shareholders and until their successors are elected and
qualified. Each Class II Director's term expires at the 1998 Annual Meeting.
The following table sets forth certain information with regard to each of the
nominees for election as a Director as well as each of the Company's
continuing Class I and Class III Directors.
 
                        NOMINEES STANDING FOR ELECTION
 
<TABLE>
<CAPTION>
                                        PRINCIPAL OCCUPATION
         NAME                             AND DIRECTORSHIPS
         ----                           --------------------
                              Class II Directors
 <C>                  <S>
 Jon F. Chait          Executive Vice President, Secretary and Director,
  Age 47               August 1991 to present, Managing Director--
                       International Operations, 1995 to present, Chief
                       Financial Officer, August 1993 to 1995, Manpower Inc.
                       and Executive Vice President, September 1989 to
                       present, Manpower International Inc., a provider of
                       temporary employment services. A Director since 1990.
 D.J. Kuester          President of the Company since 1987; President and
  Age 56               Director since January 1989, M&I Marshall & Ilsley
                       Bank; Chairman of the Board and Director, M&I Data
                       Services. Also a director of Modine Manufacturing
                       Company. A Director since February 1994.
 Edward L. Meyer, Jr.  President, Anamax Corporation, a processor of hides and
  Age 60               manufacturer of tallow. A Director since May 1994.
 Don R. O'Hare         Retired; Consultant, September 1994 to April 1997,
  Age 75               Chairman of the Board, September 1994 to October 1996,
                       Chief Executive Officer, April 1979 to April 1997, and
                       Director, Sundstrand Corporation, a manufacturer of
                       aerospace and industrial products. A Director since
                       1977.
</TABLE>
 
 
                                       4
<PAGE>
 
<TABLE>
<CAPTION>
                                       PRINCIPAL OCCUPATION
        NAME                             AND DIRECTORSHIPS
        ----                           --------------------
 <C>                <S>
 San W. Orr, Jr.     Attorney, Estates of A.P. Woodson & Family; Chairman of
  Age 56             the Board and Director, Wausau-Mosinee Paper Corporation.
                     Also a Director of MDU Resources Group, Inc. A Director
                     since July 1994.
 J.A. Puelicher      Retired; Chairman of the Board and Chief Executive
  Age 77             Officer of the Company from April 1981 to December 1992.
                     Also a director of Sundstrand Corporation. A Director
                     since 1959.
 Stuart W. Tisdale   Retired; Chairman of the Board and Chief Executive
  Age 69             Officer, August 1992 to February 1994, President and
                     Chief Executive Officer, April 1986 to August 1992, and
                     Director, WICOR, Inc. A Director of Modine Manufacturing
                     Company and Twin Disc, Inc. A Director since 1986.
 
                              CONTINUING DIRECTORS
 
<CAPTION>
                                       PRINCIPAL OCCUPATION
        NAME                             AND DIRECTORSHIPS
        ----                           --------------------
 
                Class III Directors (terms expiring April 1999)
 <C>                <S>
 Oscar C. Boldt      Chairman, The Boldt Group, Inc., subsidiaries in general
  Age 73             contracting, development and related businesses. A
                     Director since May 1994.
 J.P. Bolduc         Chairman and Chief Executive Officer of JPB Enterprises,
  Age 58             Inc., a diversified holding company with interests in the
                     food, beverage, real estate, retail and manufacturing
                     industries, since March 1995. Director from 1986 through
                     March 1995, President and Chief Executive Officer,
                     January 1993 to March 1995, President and Chief Operating
                     Officer, August 1990 to January 1993, W.R. Grace & Co.
                     Also a director of Sundstrand Corporation, Newmont Mining
                     Corporation, Brothers Gourmet Coffees, Inc. and Unisys
                     Corporation. A Director since 1987.
 Glenn A. Francke    Retired; Chairman of the Board, 1971 through January
  Age 76             1987, M&I Northern Bank, a subsidiary of the Company. A
                     Director since 1960.
 Burleigh E. Jacobs  Chairman of the Board and Director, Grede Foundries,
  Age 78             Inc., a manufacturer of grey and ductile iron, steel, and
                     alloyed castings. A Director since 1967.
 James F. Kress      Chairman, Green Bay Packaging, Inc., a manufacturer of
  Age 68             corrugated and packaging materials. A Director since
                     1986.
 Robert A. Schaefer  Retired; Former Director, Executive Vice President and
  Age 60             Chief Operating Officer of Security Capital Corporation
                     and Former Director, President and Chief Operating
                     Officer of Security Bank S.S.B. A Director since December
                     1997.
 Gus A. Zuehlke      Retired; Former Chairman, Valley Bancorporation until May
  Age 76             1994; Former Chairman, Valley Bank, Appleton, Wisconsin,
                     until May 1994. A Director since May 1994.
 
                 Class I Directors (terms expiring April 2000)

 Richard A. Abdoo    Chairman of the Board, President and Chief Executive
  Age 54             Officer, Wisconsin Energy Corporation, a holding company
                     with subsidiaries in utility and nonutility businesses,
                     since May 1991. Chairman of the Board and Chief Executive
                     Officer of Wisconsin Electric Power Company since June
                     1990. A director of Sundstrand Corporation and United
                     Wisconsin Services, Inc. A Director since July 1994.
 Wendell F. Bueche   Chairman since August 1994, President, February 1993 to
  Age 67             August 1994, Chief Executive Officer and Director,
                     February 1993 to present, IMC Global, Inc. Also a
                     director of WICOR, Inc. A Director since 1983.
</TABLE>
                                       5
<PAGE>
 
<TABLE>
<CAPTION>
                                       PRINCIPAL OCCUPATION
        NAME                             AND DIRECTORSHIPS
        ----                           --------------------
 <C>                <S>
 G.H. Gunnlaugsson   Executive Vice President and Chief Financial Officer of
  Age 53             the Company since 1987; Vice President of M&I Marshall &
                     Ilsley Bank since 1976. A Director since February 1994.
 Jack F. Kellner     Retired; Chairman of the Board from July 1991 to
  Age 81             September 1994, President, Chief Executive Officer and
                     Director until July 1991, Western Industries, Inc., a
                     manufacturer of metal stampings and sheet metal
                     fabrication. A Director since 1976.
 Katharine C. Lyall  President of the University of Wisconsin System since
  Age 56             1992. Also a director of Wisconsin Power & Light Co.,
                     Kemper National Insurance Companies and the Carnegie
                     Foundation for the Advancement of Teaching. A Director
                     since December 1997.
 P.M. Platten, III   Retired; Vice Chairman of the Board of the Company from
  Age 58             May 1994 to May 1997; Former President and Chief
                     Executive Officer, January 1989 to May 1994, Valley
                     Bancorporation. A Director since May 1994.
 J.B. Wigdale        Chairman of the Board of the Company from December 1992
  Age 61             to present, Chief Executive Officer of the Company from
                     October 1992 to present, Vice Chairman of the Board of
                     the Company from December 1988 to December 1992; Chairman
                     of the Board, January 1989 to present, Chief Executive
                     Officer, September 1987 to present, of M&I Marshall &
                     Ilsley Bank. A Director since 1988.
 James O. Wright     Chairman of the Board and Director, Badger Meter, Inc., a
  Age 77             manufacturer of products using flow measurement
                     technology serving utility, industrial and commercial
                     markets. A Director since 1960.
</TABLE>
 
  The Board of Directors of the Company has standing Executive Compensation,
Audit, Retirement Investment and Nominating Committees. The Board of Directors
held seven meetings in 1997. Each Director attended at least 75% of the
meetings of the Board and Board Committees on which the director served.
 
  The Executive Compensation Committee is responsible for administering
compensation levels for certain senior officers of the Company and its
subsidiaries, including all executive officers of the Company, and for
administering the Company's nonqualified compensation plans, including the
Executive Stock Option Plans, the 1994 Long-Term Incentive Plan and the Annual
Executive Incentive Compensation Plan. The members of the Executive
Compensation Committee are Messrs. Jacobs (Chairman), Kellner, O'Hare and
Wright, none of whom are employees of the Company or any of its subsidiaries.
The Executive Compensation Committee held four meetings in 1997. Salaries for
other employees of the Company and its subsidiaries are determined by the
management of the respective subsidiaries and are reviewed by the compensation
committee of the Board of Directors of the subsidiary involved.
 
  The Audit Committee has responsibility for nominating the Company's
independent auditors for approval by the Board of Directors, reviewing the
scope, results and costs of the audit with the Company's independent auditors
and reviewing the financial statements of the Company and the audit function
to ensure full compliance with requirements of regulatory agencies and full
disclosure of necessary information to the shareholders of the Company. The
members of the Audit Committee, all of whom are non-employee directors, are
Messrs. Kellner (Chairman), O'Hare and Wright. The Audit Committee held two
meetings in 1997.
 
  The Retirement Investment Committee is responsible, in relation to funding
policy, for reviewing the activities of and decisions made by the trustees of,
and the investment managers for, the Company's Retirement Growth Plan and
Incentive Savings Plan. The members of the Retirement Investment Committee,
none of whom are employees of the Company, are Messrs. O'Hare (Chairman),
Chait and Tisdale. The Committee held four meetings in 1997.
 
  The Nominating Committee is responsible for recommending to the Board
nominees to stand for election as directors and to fill any vacancies which
may occur from time to time. In addition, the Nominating Committee is
responsible for considering any nominations for director submitted by
shareholders and for reviewing the size and composition of the Board and the
criteria for selecting nominees to the Board. Current employees of the
 
                                       6
<PAGE>
 
Company are not eligible to serve on the Nominating Committee. The members of
the Nominating Committee are Messrs. Tisdale (Chairman), Puelicher, Chait and
Boldt. The Nominating Committee has not established procedures for
shareholders to recommend nominees for director beyond those contained in the
Company's By-laws. The Nominating Committee held one meeting in 1997.
 
                 LOANS AND OTHER TRANSACTIONS WITH THE COMPANY
 
  Customers of the bank subsidiaries of the Company include nominees,
directors and officers of the Company and their associates. Since January 1,
1997, such persons and firms have been indebted to the Company's bank
subsidiaries for loans made in the ordinary course of business. All such loans
were made on substantially the same terms, including interest rates and
collateral, as those prevailing at the time for comparable transactions with
others and did not involve more than the normal risk of collectibility or
present other unfavorable features. Loans to directors and executive officers,
including their related interests, by the Company and its significant
subsidiaries represented approximately 8.9% of shareholders equity at December
31, 1997.
 
  From time to time, directors and officers of the Company and their
associates may sell shares of their Common Stock to the Company pursuant to
the Company's stock repurchase program. The purchase price for any such sales
is the prevailing market price at the time of such sale.
 
                          SUMMARY COMPENSATION TABLE
 
<TABLE>
<CAPTION>
                                                        LONG-TERM
                                                     COMPENSATION(1)
                                                 ------------------------
                                                     AWARDS      PAYOUTS
                                                 --------------- --------
                                    ANNUAL
                                 COMPENSATION      SECURITIES      LTIP
                              ------------------   UNDERLYING    --------     ALL OTHER
   NAME AND PRINCIPAL                                            PAYOUTS
        POSITION         YEAR SALARY($) BONUS($) OPTIONS/SARS(#)    $     COMPENSATION($)(2)
   ------------------    ---- --------- -------- --------------- -------- ------------------
<S>                      <C>  <C>       <C>      <C>             <C>      <C>
J.B. Wigdale............ 1997 $625,000  $526,813     30,000      $779,850      $456,894
 Chairman of the Board   1996  580,000   370,000     30,000             0       487,679
 and Chief Executive
 Officer                 1995  550,000   275,000     30,000             0       243,324
D.J. Kuester............ 1997  525,000   446,123     26,000       675,870       235,874
 President               1996  500,000   278,259     26,000             0       258,856
                         1995  475,000   217,920     26,000             0       167,957
G.H. Gunnlaugsson....... 1997  400,000   340,130     20,000       467,910       156,387
 Executive Vice
 President               1996  345,000   272,643     18,000             0       156,383
 and Chief Financial
 Officer                 1995  325,000   207,370     18,000             0       100,761
J.L. Delgadillo......... 1997  300,000   200,000     12,000       207,960        41,007
 Senior Vice President   1996  270,000   140,000      8,000             0        43,292
                         1995  250,000   130,000      8,000             0        35,963
D.W. Layden, Jr......... 1997  250,000   120,000      8,000       207,960        37,683
 Senior Vice President   1996  225,000    85,000      8,000             0        30,275
                         1995  200,000    75,000      8,000             0        28,510
</TABLE>
- --------
(1) As of December 31, 1997, the following individuals have unreleased Key
    Restricted Stock: Mr. Delgadillo, 4,000 shares valued at $244,500 and Mr.
    Layden, 2,400 shares valued at $148,300. Values were arrived at using a
    December 31, 1997 closing market price of $62.125 per share less
    consideration which is paid by the executive upon issuance of award.
    Dividends are paid on restricted stock.
(2) Includes $4,750 for each individual paid by M&I under a 401(k) Thrift Plan
    for 1997. Includes $12,800 for each individual paid by M&I under the
    Retirement Growth Plan for 1997. Includes the following amounts paid by
    M&I under a Split Dollar Life Insurance Plan for the benefit of the
    executives for 1997: J.B. Wigdale--$13,842; D.J. Kuester--$7,165; G.H.
    Gunnlaugsson--$6,672; J.L. Delgadillo--$0 and D.W.
 
                                       7
<PAGE>
 
   Layden, Jr.--$0. Includes the following amounts earned on compensation paid
   in 1997 by M&I under the Supplementary Retirement Benefits Plan: J.B.
   Wigdale--$66,800; D.J. Kuester--$51,200; G.H. Gunnlaugsson--$40,800; J.L.
   Delgadillo--$22,400 and D.W. Layden, Jr.--$14,000. Includes the following
   above-market amounts accrued by M&I on account balances under the
   Supplementary Retirement Benefits Plan and the Executive Deferred
   Compensation Plan: J.B. Wigdale--$2,385; D.J. Kuester--$2,060; G.H.
   Gunnlaugsson--$8,254; J.L. Delgadillo--$1,057 and D.W. Layden, Jr.--$6,133.
   Also includes the following amounts accrued by M&I under the Nonqualified
   Supplemental Retirement Plan for 1997: J.B. Wigdale--$356,317; D.J.
   Kuester--$157,899; G.H. Gunnlaugsson--$83,111; J.L. Delgadillo--$0 and D.W.
   Layden, Jr.--$0.
 
  The following table provides information on options granted to the named
executive officers during 1997.
 
                     OPTION/SAR GRANTS IN LAST FISCAL YEAR
                               INDIVIDUAL GRANTS
 
<TABLE>
<CAPTION>
                                            % OF TOTAL
                         NUMBER OF SECURI- OPTIONS/SARS
                          TIES UNDERLYING   GRANTED TO  EXERCISE OR             GRANT DATE
                           OPTIONS/SARS    EMPLOYEES IN BASE PRICE  EXPIRATION   PRESENT
NAME                      GRANTED (#)(1)   FISCAL YEAR   ($/SH)(2)     DATE    VALUE ($)(3)
- ----                     ----------------- ------------ ----------- ---------- ------------
<S>                      <C>               <C>          <C>         <C>        <C>
J.B. Wigdale............      30,000           2.9%       $57.000    12/11/07    $447,969
D.J. Kuester............      26,000           2.5         57.000    12/11/07     388,240
G.H. Gunnlaugsson.......      20,000           1.9         57.000    12/11/07     298,646
J.L. Delgadillo.........      12,000           1.2         57.000    12/11/07     179,188
D.W. Layden, Jr.........       8,000           0.8         57.000    12/11/07     119,458
</TABLE>
- --------
(1) Includes options transferable to the employees' immediate family or trusts
    or partnerships for the benefit thereof. Options generally become
    exercisable based on the following schedule: 50% after 12 months from the
    date of grant, an additional 25% after 18 months from the date of grant
    and the remaining 25% after 24 months from the date of grant; provided
    that the options will become immediately exercisable upon a "Triggering
    Event" (which relates to a change of control of the Company). Employees
    who have attained age 55 and have at least ten years of service with the
    Company or a subsidiary receive options which are fully vested on the date
    of grant.
(2) All options have an exercise price equal to 100% of the fair market of the
    Company's Common Stock on the date of grant. The exercise price may be
    paid in cash or by delivery of shares of the Company's Common Stock. Upon
    exercise of an option, the holder may satisfy any tax obligations either
    by having the Company withhold shares or by delivering shares such holder
    already owns.
(3) The grant date present values were determined using the Black-Scholes
    model with the following common assumptions: a six year expected period of
    time to exercise; a risk-free rate of return of 5.75%; an expected
    dividend yield of 1.42%; and a volatility factor of 17.03%.
 
  The following table provides information on options exercised during 1997,
and options held at year end, by the named executive officers.
 
            AGGREGATED OPTION/SAR EXERCISES IN LAST FISCAL YEAR AND
 
                           FY-END OPTION/SAR VALUES
 
<TABLE>
<CAPTION>
                                                      NUMBER OF SECURITIES
                                                     UNDERLYING UNEXERCISED     VALUE OF UNEXERCISED
                                                       OPTIONS/SARS AT FY-    IN-THE-MONEY OPTIONS/SARS
                             SHARES                         END(#)(1)              AT FY-END($)(2)
                          ACQUIRED ON      VALUE    ------------------------- -------------------------
NAME                     EXERCISE(#)(1) REALIZED($) EXERCISABLE UNEXERCISABLE EXERCISABLE UNEXERCISABLE
- ----                     -------------- ----------- ----------- ------------- ----------- -------------
<S>                      <C>            <C>         <C>         <C>           <C>         <C>
J.B. Wigdale............          0              0    401,000           0     16,626,140           0
D.J. Kuester............     30,000      1,320,390    293,000      13,000     11,920,395     393,250
G.H. Gunnlaugsson.......      6,250        135,781    189,750      29,000      8,461,390     374,750
J.L. Delgadillo.........          0              0     35,000      16,000      1,402,503     182,500
D.W. Layden, Jr.........          0              0     24,000      12,000        916,000     162,000
</TABLE>
- --------
 
                                       8
<PAGE>
 
(1) Includes shares which were transferred to the employees' immediate family
    or trusts or partnerships for the benefit thereof.
(2) For valuation purposes, a December 31, 1997 market price of $62.125 was
    used.
 
  The following table provides information on long-term incentive plan awards
to the named executive officers with respect to 1997. Awards with respect to
1998 have not been included and are disclosed in the New Plan Benefits Table.
 
             LONG-TERM INCENTIVE PLANS--AWARDS IN LAST FISCAL YEAR
 
<TABLE>
<CAPTION>
                           NUMBER OF SHARES, UNITS PERFORMANCE OR OTHER PERIOD
                               OR OTHER RIGHTS     UNTIL MATURATION OR PAYOUT(1)
NAME                       ----------------------- ----------------------------
<S>                        <C>                     <C>
J.B. Wigdale..............         15,000                    3 Years
D.J. Kuester..............         13,000                    3 Years
G.H. Gunnlaugsson.........          9,000                    3 Years
J.L. Delgadillo...........          4,000                    3 Years
D.W. Layden, Jr...........          4,000                    3 Years
</TABLE>
- --------
(1) The performance period is the three years commencing on January 1, 1997
    and ending on December 31, 1999. Additional Units will be credited to each
    participant's account when dividends are paid on shares of the Company's
    Common Stock. Vesting of Units occurs at the end of the three-year period
    with the exception of the death or disability of the participant,
    termination of a participant's employment or the occurrence of a
    "Triggering Event" (which relates to a change in control of the Company).
    The value of the award at the end of the three-year period is dependent on
    the total return of the Company's Common Stock for the three-year period
    when compared with the total return for those stocks composing the Keefe,
    Bruyette, & Woods 50 Bank Index (the "KBW 50 Index") in accordance with
    the following table:
 
<TABLE>
<CAPTION>
                                                           % OF INITIAL AWARD
      KBW 50 INDEX                                      AND ACCUMULATED DIVIDEND
      PERCENTILE RANK                                         UNITS EARNED
      ---------------                                   ------------------------
      <S>                                               <C>
      95th Percentile and above........................           275%
      90th Percentile..................................           225%
      75th Percentile..................................           185%
      50th Percentile..................................           100%
      25th Percentile..................................            25%
      Below 25th Percentile............................             0%
</TABLE>
 
  If the total return on the Common Stock falls between two categories (for
example, between the 50th and 75th percentiles), the percentage earned will be
determined by linear interpolation (in this example, between 100% and 185%).
 
                               RETIREMENT PLANS
 
  The Marshall & Ilsley Corporation Nonqualified Retirement Benefit Plan (the
"Nonqualified Plan") provides five of the executive officers of M&I with a
monthly supplemental retirement benefit. The original purpose of the
Nonqualified Plan was to provide a benefit such that the sum of benefits from
the Retirement Growth Plan, Social Security, the Supplementary Retirement
Benefits Plan and the Nonqualified Plan would equal 60% of each participant's
average salary and bonus for his last five years of employment. The monthly
benefit under the Nonqualified Plan, starting in most instances when an
individual reaches age 65, is fixed based on various actuarial and interest
rate assumptions. The monthly benefits are $24,167, $23,167 and $14,958 for
Messrs. Wigdale, Kuester and Gunnlaugsson, respectively, and a total of $8,459
for two other executive officers. The benefit will be adjusted in the event of
death before age 62 or early retirement and can be paid for life with a 120-
month certain payout or on a joint and survivor basis at the option of the
participant. The pay-out option
 
                                       9
<PAGE>
 
elected will also affect the amount of the annual benefit. If a participant
leaves the employ of the Company prior to age 55, he will receive no benefits
under the Nonqualified Plan. In the event of a Change in Control of the
Company (as defined in the Nonqualified Plan), each participant will receive
the full monthly benefit set forth above regardless of his age when the Change
in Control occurs and whether he remains in the employ of M&I until age 55. A
participant has the option, in certain circumstances, to elect to receive the
present value of the benefits to which he is entitled under the Nonqualified
Plan upon a Change in Control regardless of his age at that point.
 
  The Marshall & Ilsley Corporation Executive Deferred Compensation Plan (the
"Deferred Compensation Plan") provides selected key employees of M&I,
including the named executive officers, with the ability to defer up to 80% of
base salary and 100% of bonus. Those employees electing to participate have
two investment options for amounts deferred: a fixed rate option equal to the
Moody's A Long-Term Corporate Bond Rate for the month of September of the
previous year and an equity option equal to the total return of the S&P 500
Index. The percentage allocated to any investment option may not be less than
10% and elections may be changed semi-annually. Amounts deferred are
distributable upon termination of employment at the election of the
participant. Choices range from a lump sum distribution on termination of
employment to a pay-out over 15 years if a participant's employment terminates
on or after age 55, other than because of death or disability, with at least
ten years of service. Amounts deferred and investment returns thereon are held
in the Marshall & Ilsley Corporation Deferred Compensation Trust II of which
Marshall & Ilsley Trust Company is the trustee (the "Trust").
 
  M&I's Supplementary Retirement Benefits Plan (the "SERP") is a nonqualified
benefit plan which covers employees whose compensation exceeds the statutory
limits on compensation which can be taken into account for purposes of
crediting contributions to M&I's Retirement Growth Plan, including all of the
executive officers named in the Summary Compensation Table. The amount, which
would have been allocated to such participant's account absent the statutory
limitations, is credited to an account which vests after an employee has five
years of vesting service as defined in M&I's Retirement Growth Plan.
Participants have the same investment and pay-out elections as provided in the
Deferred Compensation Plan, described above, and amounts credited under the
SERP are held in the Trust.
 
                   EMPLOYMENT AGREEMENTS AND RELATED MATTERS
 
  In order to assure management continuity and stability, M&I has entered into
substantially similar Employment Agreements (the "Employment Agreements") with
the named executive officers, six additional executive officers and 24 other
officers and employees of the Company and its subsidiaries (collectively, the
"Executives"). The Employment Agreements with the named executive officers
each have a term of three years. The Employment Agreements with the other
Executives have terms of two or three years.
 
  The Employment Agreements guarantee the Executives specific payments and
benefits upon a termination of employment as a result of a change of control
of M&I. If a change of control occurs, the contract becomes effective and
continues for the relevant term. The employment term renews on a daily basis
until M&I gives notice to terminate the daily renewal.
 
  The Employment Agreements provide for specified benefits after a change of
control if the Executive voluntarily terminates for "good reason" or is
involuntarily terminated other than for "cause" (as defined in the Employment
Agreements). In addition, in the case of some Employment Agreements, at the
end of six months after a change of control, the Executive may terminate
employment for any reason and is entitled to receive full benefits. Upon a
termination, the Executive is entitled to (a) a lump sum payment equal to two
or three times (depending on whether the contract is a two- or three-year
contract) the sum of the Executive's current base salary plus the higher of
the Executive's bonus for the last year or the Executive's average bonus for
the past three years, (b) a proportionate amount of any unpaid bonus deemed
earned for the year of
 
                                      10
<PAGE>
 
termination, (c) a lump sum payment equal to the retirement benefits lost as a
result of not having been employed for the remaining contract term, (d) health
and other benefits for the remaining contract term, and (e) payments for
certain other fringe benefits. In the event of a termination of employment as
a result of his death, the Executive's beneficiary is entitled to six months
of base salary. No additional benefits are guaranteed under the contract upon
an Executive's disability or termination by M&I for cause.
 
  The Employment Agreements provide that upon a change of control most
restrictions limiting the exercise, transferability or other incidents of
ownership of any outstanding award, restricted stock, options, stock
appreciation rights, or other property rights of M&I granted to the Executive
shall lapse, and such awards shall become fully vested, except in certain
circumstances. Some of the Employment Agreements also provide for "gross-up"
payments in the event payments to an Executive under the Employment Agreement
are subject to Section 4999 of the Internal Revenue Code of 1986, as amended
(the "Code"), (the "Excise Tax") or any similar federal, state or local tax
which may be imposed, in an amount such that the net amount retained by the
Executive, after deduction of any Excise Tax on the payments and any federal,
state and local income tax and Excise Tax on the gross-up payment, shall be
equal to the payments then due.
 
                      NON-EMPLOYEE DIRECTOR COMPENSATION
 
  Directors of M&I who are not employees are paid a retainer fee of $12,000
per year. In addition, non-employee directors receive a fee of $1,500 for each
Board meeting which they attend and $500 for each Committee meeting which they
attend. M&I has established a deferred compensation plan for its Directors.
Under such plan, all or part of the fees received by a Director may be
deferred at the election of the Director. Amounts deferred are credited with
an earnings factor based on the Director's allocation among 13-week U.S.
Treasury Bills or the Common Stock. Deferred amounts are payable in not less
than 36 nor more than 180 monthly installments, as elected by the
participating Director, unless the Board elects to distribute amounts over a
shorter period. Messrs. Boldt, Bolduc, Chait, Meyer, Orr, Schaefer and Zuehlke
elected to defer compensation under the plan during 1997. Directors of M&I who
are also Directors of subsidiaries of M&I receive compensation from such
subsidiaries in varying amounts based on the Director compensation schedule of
such subsidiaries.
 
  Directors of M&I who are not employees of M&I or its subsidiaries
("Participants") also participate in the 1995 Directors Stock Option Plan. On
the date of each Annual Meeting of Shareholders, each Participant elected or
re-elected as a director at such Annual Meeting receives an option for that
number of shares of Common Stock equal to the multiple of 2,500 and the number
of years in the term to which such Participant has been elected. In addition,
a Participant who is appointed to fill a vacancy on the Board of Directors, or
a director who becomes a Participant because such director ceases to be
employed by the Company or its subsidiaries, will receive, on the date of the
next Annual Meeting, an option for that number of shares of Common Stock equal
to a multiple of 2,500 and the number of years remaining in such Participant's
term as a director of the Company. Under the terms of this plan, the option
price per share will not be less than 100% of the fair market value of the
shares on the date the option is granted, the options will not be exercisable
more than 10 years after the date of grant, and the options will terminate no
later than three years after the Participant ceases to be a director of the
Company for any reason. Such options may be exercised at any time after they
are granted. The exercise price of an option may, at the Participant's
election, be paid in cash or previously owned shares of Common Stock or a
combination thereof.
 
  Mr. Puelicher and M&I entered into a Consulting Agreement and Supplemental
Retirement Plan in 1986, which has been extended and currently expires in 2002
(the "Consulting/Retirement Agreement"). As compensation for his commitment to
provide consulting services, Mr. Puelicher receives a retirement benefit of
$25,000 per month for his life, and, if Mr. Puelicher predeceases his wife,
his wife will receive $12,500 per month for her life. Mr. Puelicher also
receives a supplemental retirement benefit of $58,333 per month for his life
under his Supplemental Retirement Plan dated December 10, 1992. In addition,
M&I pays an annual insurance premium for Mr. Puelicher of $112,470 until the
earlier of (i) Mr. Puelicher's death, (ii) 19 years from
 
                                      11
<PAGE>
 
the date of the policy's issue, or (iii) such time as the policy is paid up.
M&I also reimburses Mr. Puelicher for all travel and other expenses incurred
in the performance of his duties and provides him with secretarial services
and office space for his life. M&I may terminate the Consulting/Retirement
Agreement for "cause" (as defined in the Consulting/Retirement Agreement). The
Consulting/Retirement Agreement provides that Mr. Puelicher may not compete
with M&I and must maintain the confidentiality of certain information
regarding M&I, its business and customers.
 
  In connection with the merger with Valley on May 31, 1994, M&I agreed to
provide Mr. Zuehlke with a $100,000 annual consulting fee for the remainder of
his life. Mr. Zuehlke also receives a car, office space and membership in a
professional organization.
 
                    EXECUTIVE COMPENSATION COMMITTEE REPORT
 
GENERAL POLICY
 
  The Executive Compensation Committee (the "Committee") determines the
compensation policy for executive officers, makes awards and sets performance
criteria under the Company's incentive plans, and determines the salary levels
for executive officers. The Committee bases its compensation decisions
primarily on its overall assessment of the executive's contribution to the
profitability of the Company on both a long-term and short-term basis and the
relevant market relationship of the executive officer's compensation. The
Committee reviews the executive's performance in light of both the historical
financial performance of the Company and the Committee's assessment of the
executive's role in ensuring the future financial success of the Company. In
this respect, the Committee seeks to reward leadership, innovation, and
entrepreneurship. The compensation package for senior executives has both
objective (performance based) and subjective elements. Beginning in 1997,
awards under the Annual Executive Incentive Plan were based on the achievement
of specified performance criteria determined by the Committee. For certain
executive officers, the financial performance of the business unit or division
for which that executive has responsibility may receive a proportionately
larger consideration by the Committee in determining that executive's
compensation. The Committee reviews the compensation plans for executives in
order to determine whether such plans are consistent with the Company's
objectives and financial performance.
 
  The Committee is aware of the limitations imposed by Section 162(m) of the
Internal Revenue Code of 1986, as amended, on the deductibility of
compensation paid to certain senior executives to the extent it exceeds $1
million per executive. The Committee currently intends to recommend
compensation amounts and plans which will meet the requirements for
deductibility.
 
1997 COMPENSATION
 
 Overview
 
  With regard to 1997 compensation decisions, the Committee reviewed the
Company's financial performance on both a long-term and short-term basis, the
overall performance of each executive officer, the information provided by the
Company's professional compensation consultants, other internally prepared
peer group analyses and various other information which the Committee deemed
relevant in the case of any particular individual. The externally and
internally prepared peer group analyses provided the Committee with
information on the market relationship of compensation paid to the Company's
executive officers. The analyses included information on the companies in the
KBW 50 Index which is the same peer group used in the performance graph. The
Committee reviewed this information for comparison purposes, taking into
account the Company's size and performance relative to the companies in the
peer group. The Committee did not, however, set the compensation for the
Company's executive officers at a specific level as compared to the peer
group. The Committee's compensation determinations generally reflect
competitive factors and performance. In the case of any particular individual,
circumstances unique to such individual such as increased responsibilities or
extraordinary effort may
 
                                      12
<PAGE>
 
also be reflected. In assessing the Company's performance, the Committee
considered, among other things, the profitability of the Company as a whole on
both a long-term and short-term basis (including net income, earnings per
share, return on average shareholders' equity and return on average assets).
The Committee's decisions with respect to compensation generally reflect all
of the factors considered, including objective factors and the Committee's
subjective assessment of the executive's performance.
 
 Annual Executive Incentive Plan
 
  The Annual Executive Incentive Plan provides for annual cash incentives
(bonuses) to the participants based upon one or more objective financial
performance criteria selected by the Committee. The Annual Executive Incentive
Plan rewards eligible senior executives with an incentive award based on a
percentage of each participant's base salary if the performance goals set by
the Committee are met for that year. The performance criteria for 1997 was
based upon earnings per share. The Company earned $2.42 per share in 1997,
representing a 14.2% increase over 1996. This exceeded the targeted
performance level established by the Committee for 1997, and resulted in
eligible executive officers receiving payouts ranging from 34% to 84% of their
respective 1997 base salaries.
 
 Base Salary and Long-Term Incentive Compensation
 
  In determining the base salaries for the Company's executive officers, the
Committee takes a long-term view of both the executive's job performance and
the Company's financial performance. The Committee believed it was appropriate
in 1997 to increase base salaries and to make long-term incentive awards
(stock options and LTIP units) to the Company's senior executive officers. The
Committee believes the size of the increases (for base salaries) and the
amount of the awards (for long-term incentives) were commensurate with the
Committee's overall evaluation of the senior executives' performance both for
1997 and on a long-term basis. Such increases and awards were based on all the
factors, both objective and subjective, considered by the Committee and
generally no one specific criteria was applied to determine the size or amount
thereof.
 
  The Committee made awards in 1997 under the Company's Executive Stock Option
Plans and the LTIP. The purpose of these awards is to furnish long-term
incentives to executive officers to build shareholder value and to motivate
and retain the personnel critical to the Company's success. It is the
intention of the Committee to continue to emphasize long-term incentives in
the compensation provided to the Company's executive officers. In arriving at
1997 award levels, the Committee gave consideration to the officer's relative
position, responsibilities and performance. Each executive who received an
award received two stock options for each performance unit granted. In
determining the size of the awards, the Committee considered information
provided by professional compensation consultants on stock option and long-
term incentive plan awards of companies in a representative peer group (which
group is not identical to the KBW 50 Index). However, the Committee did not
base the size of the awards at any specific level in comparison to the peer
group, nor did the Committee base the awards on any specific element of the
Company's performance.
 
 Chief Executive Officer Compensation
 
  In determining Mr. Wigdale's salary and long-term incentive awards, the
Committee's review concentrated on the prevailing market rates of compensation
for his position and the Company's current and prior year's financial
performance. The Committee considered the compensation of Mr. Wigdale's peers
in the KBW 50 Index, taking into account the Company's size and performance
relative to the companies in the peer group, in order to determine whether Mr.
Wigdale is compensated on a basis which is reasonably consistent. Mr. Wigdale
received an Annual Executive Incentive Plan Award of 84% of his base salary,
resulting from the Company's 1997 earnings per share performance in relation
to the goals established under the plan. It is the Committee's conclusion that
Mr. Wigdale's compensation is fair and appropriate.
 
THE COMPENSATION COMMITTEE:
            Mr. Jacobs, Chairman Mr. Kellner Mr. O'Hare Mr. Wright
 
                                      13
<PAGE>
 
                               PERFORMANCE GRAPH
 
  The following graph shows the cumulative total stockholder return on the
Company's Common Stock over the last five fiscal years compared to the returns
of the Standard & Poor's 500 Stock Index and the KBW 50 Index.
 
                            CUMULATIVE TOTAL RETURN
 
                  ASSUMES DIVIDENDS & CAPITAL GAINS REINVESTED
 
                                      LOGO
 
<TABLE>
<CAPTION>
                           12/31/92 12/31/93 12/31/94 12/31/95 12/31/96 12/31/97
                           -------- -------- -------- -------- -------- --------
<S>                        <C>      <C>      <C>      <C>      <C>      <C>
M&I.......................   $100     $114     $ 95     $133     $181     $331
S&P 500...................    100      110      112      153      189      252
KBW 50....................    100      106      100      160      227      332
</TABLE>
 
 KBW = Keefe, Bruyette & Wood, Inc. 50-Bank Index; S&P = Standard & Poor's 500.
 
                                       14
<PAGE>
 
        AMENDMENTS TO THE 1994 LONG-TERM INCENTIVE PLAN FOR EXECUTIVES
 
THE BOARD OF DIRECTORS RECOMMENDS A VOTE FOR APPROVAL OF THE AMENDMENTS TO THE
                                     LTIP.
 
  The Board of Directors amended the Company's LTIP on February 12, 1998,
subject to approval by the Company's shareholders. The LTIP was initially
approved by the Committee, the Board of Directors and the Company's
shareholders in 1994. The goal of the LTIP is to attract and retain key
personnel and to provide them with an incentive to put forth maximum effort
for the continued success and growth of the Company. Employees eligible to
receive awards under the LTIP are executive officers and senior managers of
the Company or its subsidiaries. The LTIP is a Unit-based plan where each Unit
represents the equivalent of one share of the Company's Common Stock. If, and
to the extent, pre-established performance goals are attained, participating
employees are entitled to a percentage of the Units awarded (increased by
additional Units credited to each participant's bookkeeping account in lieu of
dividends during the performance period) which can range from zero to 275% of
the Units. Awards can be paid in Common Stock, cash or a combination
determined in the sole discretion of the Committee.
 
  The Company is seeking shareholder approval of the amendments to the LTIP
and the change in the performance goals in order to comply with Section 162(m)
of the Internal Revenue Code which limits the deductibility of compensation
paid to certain senior executives of the Company unless it is performance-
based.
 
  The amendment increases the number of Units available for grant under the
LTIP by 600,000, to a total of 1,200,000 Units (excluding Units granted in
lieu of dividends). Awards with respect to 442,000 Units have been made
through January 31, 1998. If the amendment is approved, 758,000 Units will be
available to be granted under the LTIP in the future. In addition, consistent
with the increase in Units available, the number of Units which may be granted
under the LTIP to any one individual is increased by 150,000, to a total of
300,000 Units.
 
  The amendment also specifies the performance criteria which the Committee
may consider in setting performance goals under the LTIP. The performance
criteria may include one or more of earnings per share, net income, return on
average assets, return on average equity, total shareholder return or cost
control of the Company, and/or one or more of its subsidiaries, or any other
entity in which the Company owns more than 50% of the interests entitled to
vote. The Committee retains sole discretion to determine the performance
period, the performance objectives to be achieved (including defining the
above terms and, if it deems appropriate, the exclusion of extraordinary items
or any other adjustments which it considers proper) and the measure of whether
and to what extent such objectives have been met.
 
  The amendment also provides that the LTIP may be amended by the Board of
Directors, but that no amendment increasing the number of Units subject to the
Plan, or which under applicable law or regulatory provisions would require
shareholder approval, can be made without obtaining shareholder approval.
 
  At its December 1997 and January 1998 meetings, the Committee adjusted the
performance criteria for Units granted for the three-year performance period
beginning January 1, 1998, subject to shareholder approval. For the prior
three-year performance periods, the sole criterion was based on the Company's
total shareholder return in relation to the other members of the KBW 50 Index
("KBW 50"). The Committee added earnings per share as a second criterion
because it provides a direct measure of the Company's performance and it is
expected that growth in earnings per share should ultimately result in
increased shareholder value. Therefore, beginning with awards granted for the
current performance period, the Committee revised the previous incentive
matrix basing one-half of the potential award multiple on total shareholder
return as compared with the KBW 50 Index and the other half on cumulative
earnings per share. The threshold, target and maximum earnings per share
performance objectives were established by applying certain compound annual
rates of growth to the earnings per share for the year prior to the start of
the performance period. The Committee retains discretion to change the
performance criteria for future award periods.
 
 
                                      15
<PAGE>
 
  The computation of the number of Units earned will be determined in
accordance with the following award table with the minimum payout multiple
being zero and the maximum payout multiple being 275%, applied to the Units
awarded plus the Units credited in lieu of dividends:
 
<TABLE>
<CAPTION>
                                                               PAYMENT MULTIPLE
                                    PERFORMANCE OBJECTIVES       PERCENTAGE(1)
                                ------------------------------ -----------------
                                KBW 50 INDEX CUMULATIVE THREE-
                                 PERCENTILE  YEAR EARNINGS PER
                                    RANK     SHARE ("EPS")(2)   KBW 50    EPS
                                ------------ ----------------- -----------------
<S>                             <C>          <C>               <C>      <C>
Threshold......................     25th                         12.50%   12.50%
Target.........................     50th                         50.00%   50.00%
                                    75th                         92.50%   92.50%
Maximum........................     95th                        137.50%  137.50%
</TABLE>
- --------
(1) Applied to Units awarded plus Units credited in lieu of dividends.
(2) Because the Committee believes that earnings per share targets represent
    confidential business information, the disclosure of which would adversely
    affect the Company, the Committee has determined it is in the best
    interests of the Company not to publish such information.
 
  If performance under either measure falls between two categories, the
percentage earned will be determined by linear interpolation. Before awards
are paid, the Committee must certify the extent to which the performance
criteria have been met.
 
  If the shareholders do not approve the amendments to the LTIP and the change
in the performance goals, the award of Units made by the Committee at its
December 1997 meeting will be nullified.
 
  The following table provides information on LTIP awards to the named
executive officers, to all current executive officers as a group, to all non-
executive directors as a group and to all other key employees as a group with
respect to 1998 under the LTIP as proposed to be amended.
 
                            NEW PLAN BENEFITS TABLE
 
<TABLE>
<CAPTION>
                                                                 PERFORMANCE OR
                                                                  OTHER PERIOD
                                                                     UNTIL
                                         NUMBER OF SHARES, UNITS MATURATION OR
NAME                                         OR OTHER RIGHTS       PAYOUT(1)
- ----                                     ----------------------- --------------
<S>                                      <C>                     <C>
J.B. Wigdale............................         15,000             3 Years
D.J. Kuester............................         13,000             3 Years
G.H. Gunnlaugsson.......................         10,000             3 Years
J.L. Delgadillo.........................          6,000             3 Years
D.W. Layden, Jr.........................          4,000             3 Years
All Current Executive Officers as a
 Group(11)..............................         64,500             3 Years
All Non-Executive Directors as a Group..              0                 --
All Other Key Employees as a Group(24)..         40,250             3 Years
</TABLE>
- --------
(1) The value of the awards at the end of the three-year period will be based
    on the computation described in the above summary and will be in
    accordance with the above award table.
 
                                      16
<PAGE>
 
                     DIRECTORS DEFERRED COMPENSATION PLAN
 
  The complete text of the Directors Deferred Compensation Plan is set forth
in Appendix A. The following summary of the material features of the Directors
Deferred Compensation Plan is qualified in its entirety by reference to
Appendix A.
 
  THE BOARD OF DIRECTORS RECOMMENDS A VOTE FOR APPROVAL OF THE DIRECTORS
DEFERRED COMPENSATION PLAN.
 
  The Board of Directors approved the amended and restated Directors Deferred
Compensation Plan (the "Directors Deferred Plan") on February 12, 1998,
subject to approval by the Company's shareholders. The Directors Deferred Plan
was initially established by the Board of Directors, effective as of January
1, 1985. The purpose of the Directors Deferred Plan, both as initially
established on January 1, 1985, and as currently being amended and restated,
is to allow the Company's Directors to elect to defer their compensation for
serving on the Company's Board. Such deferrals are deemed invested, at the
Directors' elections, in either Common Stock or Treasury Bills until
retirement from the Board of Directors, at which point deferrals are paid out
over a period of time previously designated by each Director.
 
  The primary purposes of this amendment and restatement are: (1) to allow the
Company to fund its obligation to directors who choose the Common Stock
account by purchasing shares of the Company's Common Stock, thereby
eliminating the volatile effects, both in the financial statements and
economically, which may be created by movements in the Company's Common Stock
price, and (2) to expand participation to all directors, including those of
all direct and indirect subsidiaries, divisions and affiliates of the Company.
 
  The Committee administers the Directors Deferred Plan. The Committee has
full power to construe and interpret the Directors Deferred Plan and to
establish rules and regulations and adopt standard forms for its
administration.
 
  Under the Directors Deferred Plan, deferred compensation may be allocated to
one of two accounts as selected by the participant: (1) the Common Stock
account; or (2) a cash account, earning interest at a rate equal to that
earned on U.S. Treasury Bills with maturities of 13 weeks. Previously the
Common Stock account was a so-called "phantom stock" account whose performance
matched that of the Company's Common Stock. No shares of Common Stock were
actually issued or reserved for issuance in connection with the phantom stock
accounts. Payment of benefits from the Directors Deferred Plan was made solely
in cash. Under the Directors Deferred Plan, the trustee of a nonqualified
deferred compensation trust (the "Trust") purchases shares of Common Stock for
the Common Stock accounts, and payment of benefits from the Common Stock
accounts is made in shares of Common Stock. The trustee will also invest the
amounts allocated to the cash account.
 
  Under the Directors Deferred Plan, the Company's Directors as well as the
directors of all direct and indirect subsidiaries, divisions or affiliated
entities of the Company, are eligible to participate. As of February 1, 1998,
over 300 individuals would be eligible to participate in the Directors
Deferred Plan. The amounts that will be received in the future under the
Directors Deferred Plan are not determinable.
 
  The right of a Director or his or her beneficiary to receive a distribution
under the Directors Deferred Plan is an unsecured claim against the general
assets of the Company. The Company will "fund" the Directors Deferred Plan
through a so-called "rabbi trust" or grantor trust, but neither a Director nor
any beneficiary will have any rights in or against any specific assets of the
Company or the Trust.
 
  The Directors Deferred Plan may be amended by the Board of Directors, but
certain amendments affecting the participants' accounts may not be made
without obtaining the participants' approval.
 
  Failure to obtain shareholder approval of the Directors Deferred Plan will
nullify the Directors Deferred Plan as proposed and the Directors Deferred
Plan will revert to the version as amended and restated effective January 1,
1995.
 
                                      17
<PAGE>
 
                      SUBMISSION OF SHAREHOLDER PROPOSALS
 
  The 1999 Annual Meeting of Shareholders is scheduled for April 27, 1999. In
accordance with the Company's By-Laws, nominations, other than by or at the
direction of the Board of Directors, of candidates for election as directors
at the 1999 Annual Meeting of Shareholders and any other shareholder proposed
business to be brought before the 1999 Annual Meeting of Shareholders must be
submitted to the Company not later than January 28, 1999. Shareholder proposed
nominations and other shareholder proposed business must be made in accordance
with the Company's By-Laws which provide, among other things, that shareholder
proposed nominations must be accompanied by certain information concerning the
nominee and the shareholder submitting the nomination, and that shareholder
proposed business must be accompanied by certain information concerning the
proposal and the shareholder submitting the proposal. To be considered for
inclusion in the proxy statement solicited by the Board of Directors,
shareholder proposals for consideration at the 1999 Annual Meeting of
Shareholders of the Company must be received by the Company at its principal
executive offices, 770 North Water Street, Milwaukee, Wisconsin 53202 on or
before November 9, 1998. Proposals should be directed to Mr. M.A. Hatfield,
Senior Vice President and Secretary. To avoid disputes as to the date of
receipt, it is suggested that any shareholder proposal be submitted by
certified mail, return receipt requested.
 
                        INDEPENDENT PUBLIC ACCOUNTANTS
 
  The Board of Directors has selected Arthur Andersen LLP as the Company's
independent auditors for the fiscal year ending December 31, 1998.
Representatives of Arthur Andersen LLP will be present at the Annual Meeting
to make any statement they may desire and to respond to questions from
shareholders.
 
                           PENDING LEGAL PROCEEDINGS
 
  No director or named executive officer is an adverse party or has an
interest adverse to the Company or any of its subsidiaries in any material
pending legal proceeding.
 
            SECTION 16(A) BENEFICIAL OWNERSHIP REPORTING COMPLIANCE
 
  Section 16(a) of the Securities and Exchange Act of 1934 requires the
Company's directors and officers to file reports with the Securities and
Exchange Commission disclosing their ownership, and changes in their
ownership, of stock in the Company. Copies of these reports must also be
furnished to the Company. Based solely on a review of these copies, the
Company believes that during 1997 all filing requirements were complied with.
 
                                 OTHER MATTERS
 
  Although management is not aware of any other matters that may come before
the meeting, if any such matters should be presented, the persons named in the
accompanying proxy intend to vote such proxy in accordance with their best
judgment.
 
                                          By Order of the Board of Directors,
 
                                          M.A. Hatfield, Senior Vice President
                                           and Secretary
 
                                      18
<PAGE>
 
                                                                     APPENDIX A
 
                             AMENDED AND RESTATED
 
                     DIRECTORS DEFERRED COMPENSATION PLAN
 
                                      OF
 
                         MARSHALL & ILSLEY CORPORATION
 
                                   RECITALS
 
  The Board of Directors of Marshall & Ilsley Corporation ("the Company")
initially established this Directors Deferred Compensation Plan, effective as
of January 1, 1985 (the "Plan"). The Plan was amended and restated effective
January 1, 1995. The purpose of the Plan is to allow the Company's directors
to elect to defer their compensation for serving on the Company's Board. Such
deferrals are deemed invested, at the directors' elections, in either common
stock of the Company ("Common Stock") or Treasury Bills until retirement from
the Board at which point deferrals are paid out over a period of time
previously designated by each director. Twelve subsidiary banks, a non-bank
subsidiary and a division of the Company (the "Affiliates") have adopted
substantially similar plans in which their directors may participate (the
"Affiliate Plans"). For ease of administration and to facilitate the
establishment of a nonqualified deferred compensation trust (the "Trust") in
connection with the Plan and the Affiliate Plans, the Company hereby (i)
assumes the obligations of the Affiliates to the participating directors in
the Affiliate Plans as reflected on the books of each Affiliate, which
assumption shall be treated as a capital contribution by the Company to each
Affiliate, as of the date designated, (ii) agrees that the Affiliate Plans
should be merged herewith and that their separate existence shall cease in
accordance with action by the respective Boards and (iii) amends and restates
the Plan, which, as of the date designated, shall be available to the
directors of the Company, the Affiliates, and the directors of all other
direct and indirect subsidiaries, divisions or affiliated entities of the
Company. Such amendment and restatement of the Plan is subject to the approval
of the Company's shareholders at their annual meeting on April 28, 1998.
Failure to obtain such approval shall nullify the amendment and restatement
and the Plan shall revert to the version as amended and restated effective
January 1, 1995.
 
                                   SECTION I
 
                                  Definitions
 
  "Account A" means a bookkeeping account being administered for the benefit
of a Participant under Paragraph 3.1, below.
 
  "Account B" means a bookkeeping account being administered for the benefit
of a Participant under Paragraph 3.2, below.
 
  "Change in Control" means any of the following: (a) the commencement by any
person or group of persons, other than one or more of the Companies, of a
tender or exchange offer for twenty-five percent (25%) or more of the
outstanding shares of the common stock of the Company; (b) the acceptance by
the Board of Directors of the Company of, or the public recommendation by the
Board that the stockholders of the Company accept, an offer from any person or
group of persons, other than one or more of the Companies, to acquire twenty-
five percent (25%) or more of either the outstanding shares of the common
stock of the Company or the consolidated assets of the Company; (c) the
acquisition, by any person or group of persons, of the beneficial ownership or
the right to acquire beneficial ownership of twenty-five percent (25%) or more
of the outstanding shares of the common stock of the Company (the term "group"
and "beneficial ownership" as used in this paragraph having the meanings
assigned thereto in Section 13(d) of the 1934 Act and the regulations
promulgated thereunder); or (d) the Company (or any of the Companies in the
aggregate representing at least
 
                                      A-1
<PAGE>
 
25% of the consolidated assets of the Companies), shall have entered into an
agreement with any person, or any person shall have filed a draft or final
application or notice with the Board of Governors of the Federal Reserve
System or the Office of the Comptroller of the Currency or any other federal
or state regulatory agency for approval, to (i) merge or consolidate with, or
enter into any similar transaction with, the Company or such Companies, in
which the Company or one of the Companies is not the survivor (ii) purchase,
lease or otherwise acquire all or substantially all of the assets of the
Company or such Companies, or (iii) purchase or otherwise acquire (including
by way of merger, consolidation, share exchange or any similar transaction) or
otherwise hold or own, securities representing twenty-five percent (25%) or
more of the voting power of the Company or such Companies.
 
  "Committee" means the Company's Executive Compensation Committee.
 
  "Common Stock" means the authorized and issued or unissued $1.00 par value
common stock of the Company.
 
  "Company" means Marshall & Ilsley Corporation, a Wisconsin corporation, or
any successor thereto.
 
  "Companies" means Marshall & Ilsley Corporation, a Wisconsin corporation, or
any successor thereto, and its direct and indirect subsidiaries, divisions or
affiliated entities.
 
  "Compensation" means the annual retainer fees, attendance fees and committee
fees payable by the Companies to a Participant for a Plan Year without
reduction for withholding taxes and exclusive of the value of any fringe
benefits which the Participant receives or is entitled to receive as a
Director of the Companies.
 
  "Director" means any member of the Boards of Directors of the Companies who
is not an employee of the Companies.
 
  "Disability" means disability as from time to time defined in the Company's
Long-Term Disability Income Plan.
 
  "Fair Market Value" means the closing sale price of the Common Stock on the
NASDAQ National Market System as reported in the Midwest Edition of the Wall
Street Journal for the applicable date provided that, if no sales of Common
Stock were made on said exchange on that date, "Fair Market Value" shall mean
the closing sale price of the Common Stock as reported for the most recent
preceding day on which sales of Common Stock were made on said exchange, or,
failing any such sales, such other market price as the Committee may determine
in conformity with pertinent law and regulations of the Treasury Department.
 
  "Participant" means each member of or Board of Directors of the Companies
who elects to participate in the Plan for a Plan Year.
 
  "Plan" means the Marshall & Ilsley Corporation Directors' Deferred
Compensation Plan as described herein and as the same hereafter may be amended
from time to time.
 
  "Plan Year" means the 12-month period beginning on January 1 of any year and
ending on December 31.
 
  "Trust" means the Company's Deferred Compensation Trust III.
 
                                  SECTION II
 
                    Participation and Election of Accounts
 
  2.1. Participation. Each Director may elect, in accordance with the election
procedures prescribed by the Committee from time to time, to become a
Participant in the Plan for a Plan Year and to have all or a portion of his
Compensation for such Plan Year arising after the date of the election
deferred for his benefit under the Plan.
 
                                      A-2
<PAGE>
 
  2.2. Election of Accounts. At the time a Director elects to be a Participant
for a Plan Year, he also may elect that any portion or all of his Compensation
for the Plan Year which is deferred hereunder be allocated to his Account A or
Account B. If no such election is made, all of his Compensation deferred for
the Plan Year shall be allocated to his Account B.
 
  2.3. Manner of Election. Any election pursuant to Paragraphs 2.1 or 2.2,
above, shall be made in writing on such form or forms as the Committee shall
prescribe from time to time and, if a Participant elects to have less than all
of his Compensation for a Plan Year deferred or elects that portions of his
deferred Compensation be allocated to different Accounts, the election shall
set forth the method for determining the amount to be so deferred or
allocated. Such election shall be effective when filed with the Secretary of
the Company.
 
                                  SECTION III
 
                          Administration of Accounts
 
  3.1. Account A. Amounts allocated to a Participant's Account A shall be
considered to be invested in Common Stock on a monthly basis, and such
Participant's Account A shall be credited with the equivalent number of shares
of Common Stock (hereinafter referred to as "Credited Shares") which the
amount allocated would have purchased on a common investment date, which will
typically be any of the first five business days of any month, determined in
the sole discretion of an independent brokerage agent. In addition, as of each
record date for the payment of dividends on Common Stock, each Participant's
Account A shall be credited with a number of additional Credited Shares
resulting from the reinvestment of dividends. In the event of a stock
dividend, stock split, or similar transaction, each Participant's Account A
shall be credited with a number of additional Credited Shares equal to the
number of shares of Common Stock which would have been received on such date
by a holder of a number of shares of Common Stock equal to the number of
Credited Shares then held by a Participant. In the event of any distribution
with respect to Common Stock other than a cash dividend, stock split, stock
dividend or similar transaction, each Participant's Account A shall be
credited with a number of additional Credited Shares or other consideration as
determined by the Committee in its sole discretion. In the event of a Change
in Control, a Participant's Account A shall be credited with the same amount
and type of consideration which a shareholder of the Company would have
received holding the same number of shares of Common Stock as are held in the
Participant's Account A at the time of the payment of the consideration.
 
  3.2. Account B. Amounts allocated to a Participant's Account B shall be
considered to be invested in U.S. Treasury Bills having a maturity of 13
weeks. Each Participant's Account B shall be credited on the last day of each
calendar quarter with the amount of interest which would have been earned if
the balance in a Participant's Account B, as of the last day of the previous
calendar quarter (including interest credited hereunder for the previous
calendar quarter) plus one-half of the applicable deferrals made during the
subject calendar quarter were invested in U.S. Treasury Bills with a maturity
of 13 weeks. The rate of interest applied will be determined by the Committee
or its designees from time to time in accordance with guidelines disclosed to
the Participants.
 
  3.3. Change of Accounts. Once amounts have been allocated to Account A or
Account B by a Participant, these amounts must remain in Account A or Account
B until such amounts are distributed to the Participant pursuant to Section IV
hereof.
 
  3.4. Nature of Account. The accounts established for each Participant
hereunder and assets, if any, acquired by the Company to measure a
Participant's benefits hereunder, shall not constitute or be treated for any
reason as a trust for, property of or a security interest for the benefit of,
a Participant, his beneficiaries or any other person. Participant and the
Company acknowledge that the Plan constitutes a promise by the Company to pay
benefits to the Participants or their beneficiaries, that Participants' rights
hereunder (by electing to defer Compensation hereunder) are limited to those
of general unsecured creditors of the Company and that the establishment of
the Plan, acquisition of assets to measure Participant's benefits hereunder or
deferral of all or any portion of a Participants' Compensation hereunder does
not prevent any property of the Company from being
 
                                      A-3
<PAGE>
 
subject to the right of all the Company's creditors. The Company shall
contribute all contributions hereunder to the Trust which will comply with the
requirements of the Internal Revenue Service's model trust, as described in
Revenue Procedure 92-64.
 
                                  SECTION IV
 
                                 Distributions
 
  4.1. Normal Distributions. Except as otherwise provided in this Paragraph,
distribution of the amounts credited to a Participant's account(s) shall be
made to the Participant in either a lump sum or in such number of annual
installments (which shall be not less than two (2) or more than ten (10)
installments) as are elected by the Participant by written notice to the
Committee at least twelve (12) months before he ceases to be a Director or, if
no such election is made, in five (5) annual installments. Lump sum payments
shall be made no later than February 15 of the year after the year in which a
director's service terminates. Annual installment payments shall be made no
later than February 15 of any year and shall commence in the year after
termination of service as a director. The amount of each such annual
installment shall be equal to (i) the total number of shares of Common Stock
credited to the Participant's Account A as of the last day of the prior year
and (ii) the total dollar amount credited to the Participant's Account B as of
the last day of the prior year, each multiplied by a fraction, the numerator
of which is one (1) and the denominator of which is the remaining number of
unpaid annual installments remaining on such date. Distributions from Account
A shall be made in shares of Common Stock and distributions from Account B
shall be made in cash. The last annual installment shall be of the entire or
number of shares of Common Stock or cash remaining in the Participant's
account(s). The Committee shall make whatever adjustments may be necessary to
the amounts credited to a Participant's account(s) to reflect any
distributions made hereunder.
 
  4.2. Distribution After Death of a Participant. If a Participant ceases to
be a Director by reason of his death or if he dies after he is no longer a
Director but prior to the distribution to him of all amounts payable to him
under the Plan, the amounts that would otherwise be distributable to him, if
living, shall be distributed to his designated beneficiary or beneficiaries
and any reference to a Participant in Paragraph 4.1, above, shall be deemed to
include a reference to his designated beneficiary or beneficiaries unless the
Participant otherwise elects on forms provided by the Committee. All
beneficiary designations shall be made in such form and manner as from time to
time may be prescribed by the Committee. A Participant from time to time may
revoke or change any beneficiary designation on file with the Committee. If
there is no effective beneficiary designation on file with the Committee at
the time of the Participant's death, distribution of amounts otherwise payable
to the deceased Participant under this Plan shall be made to his Estate. If a
beneficiary designated by a Participant to receive his benefit shall survive
the Participant but die before receiving all distributions hereunder, the
balance thereof shall be paid to such deceased beneficiaries' Estate, unless
the deceased Participant's beneficiary designation provides otherwise.
 
  4.3. Accounts Less than $25,000. Notwithstanding anything herein contained
to the contrary, if the sum of the Fair Market Value of the shares of Common
Stock in a Participant's Account A and the dollar amount in a Participant's
Account B is less than $25,000 at the end of any Plan Year after he ceases to
be a Director, the Committee may, in its sole discretion, direct that the
account(s) be distributed in a lump sum no later than the February 15
following the year in which this occurs.
 
  4.4. Alternative Distribution Schedules. Notwithstanding anything contained
herein to the contrary, if a Participant or the designated beneficiary or
beneficiaries of a Participant entitled to receive distributions under this
Plan requests distributions to be made to him after the Participant is no
longer a Director in a manner other than that provided under Paragraph 4.1,
above, the Committee may make such distributions as it deems appropriate
consistent with such request. The Committee's determination as to the
appropriateness of varying the amounts and timing of the distributions
hereunder shall be binding and conclusive on all parties concerned.
 
                                      A-4
<PAGE>
 
                                   SECTION V
 
                 Rights, Privileges and Duties of Participants
 
  5.1. Rights of Participant. No Participant or any other person shall have
any interest in any fund or in any specific asset or assets of the Company by
reason of any amounts credited to any Account hereunder, nor any right to
exercise any of the rights or privileges of a stockholder with respect to any
securities hypothetically credited to a Participant's Account A under the
Plan, nor any right to receive any distributions under the Plan except as and
to the extent expressly provided in the Plan.
 
  5.2. Copy of Plan. Each Participant shall be entitled, upon his request to
the Secretary of the Company, to receive the most current version of the Plan.
 
  5.3. No Alienation. To the extent permitted by law, the right of any
Participant or any beneficiary to receive any payment hereunder shall not be
subject to alienation, transfer, sale, assignment, pledge, attachment,
garnishment or encumbrance of any kind. Any attempt to alienate, sell,
transfer, assign, pledge or otherwise encumber any such payments whether
presently or thereafter payable shall be void. Any payment due hereunder shall
not in any manner be subject to debts or liabilities of any Participant or his
beneficiary.
 
  5.4. Costs of Disputes. If any Participant shall bring any legal or
equitable action against the Company by reason of being a Participant under
this Plan or if it is necessary for the Company to bring any legal or
equitable action under this Plan against any Participant or any person
claiming an interest by or through such Participant, the results of which
shall be adverse to the Participant or the person claiming an interest by or
through such Participant, the cost of defending or bringing such action,
including attorneys' fees, shall be charged first, to the extent possible,
directly to the account(s) of the Participant.
 
  5.5. Mental Competence. Every person receiving or claiming payments or
rights under the Plan shall be conclusively presumed to be mentally competent
until the date on which the Committee receives a written notice in a form and
manner acceptable to the Committee that such person is incompetent and that a
guardian, conservator or other person legally vested with the interest of his
estate has been appointed. In the event a guardian or conservator of the
estate of any person receiving or claiming payments under the Plan shall be
appointed by a court of competent jurisdiction, payments under this Plan may
be made to such guardian or conservator provided that proper proof of
appointment and continuing qualification is furnished in a form and manner
acceptable to the Committee. Any such payments so made shall be a complete
discharge of any liability therefor.
 
  5.6. Provision of Information. Each person, whether a Participant, a duly
designated beneficiary of a Participant, a guardian or any other person
entitled to receive a payment under this Plan shall provide the Committee with
such information as it may from time to time deem necessary or in its best
interests in administering the Plan. Any such person shall also furnish the
Committee with such documents, evidence, data or other information as the
Committee may from time to time deem necessary or advisable.
 
                                  SECTION VI
 
                                   Committee
 
  6.1. Committee Actions. The Plan shall be administered by the Committee. The
Committee may from time to time (i) construe and interpret the Plan, (ii)
resolve all questions arising in the administration, interpretation and
application of the Plan including, but not limited to, questions as to the
right of any person to a benefit, (iii) establish rules and regulations for
the administration of the Plan and (iv) adopt standard forms for such matters
as elections, beneficiary designations and applications for benefits, provided
that all such actions must be consistent with the Plan. All determinations of
the Committee, irrespective of their character or nature, including, but not
limited to, all questions of construction and interpretation, shall be final,
binding and conclusive upon all parties.
 
                                      A-5
<PAGE>
 
  6.2. Committee Consultation. The Company and/or the Committee may consult
with legal counsel, who may be counsel for the Company or other counsel, with
respect to its obligations and duties hereunder or with respect to any claim,
action or proceeding or any other matter, and shall not be liable for any
action taken or not taken by it in good faith pursuant to the advice of such
counsel.
 
  6.3. Books and Records. The Committee shall be responsible for maintaining
books and records for the Plan. Such books and records shall only be open for
examination by a Participant or his duly designated beneficiary to the extent
that they specifically involve his account(s) or any payments which are to be
made to him or his beneficiary hereunder. Each Participant or his duly
designated beneficiary shall be notified no less frequently than annually of
the balance in his account(s).
 
                                  SECTION VII
 
                           Amendment or Termination
 
  The Board of Directors of the Company hereby reserves the right to amend,
modify, terminate, or discontinue the Plan at any time; provided, however, no
such action shall (i) reduce the amount then credited to any account of any
Participant, (ii) change the time and manner of payment of such amount, or
(iii) after a Change in Control, reduce the amounts to be credited to a
Participant's account(s) being administered hereunder, without the consent of
a majority of the holders of account balances hereunder.
 
                                 SECTION VIII
 
                                 Miscellaneous
 
  8.1. Construction. Wherever the context so requires, words in the masculine
include the feminine and words in the feminine include the masculine and the
definition of any term in the singular may include the plural.
 
  8.2. Expenses. All expenses of administering the Plan shall be paid by the
Company except as expressly provided herein to the contrary.
 
  8.3. Governing Law. The Plan shall be construed, administered and governed
in all respects under and by the laws of the State of Wisconsin.
 
  8.4. Tenure Not Guaranteed by Plan. The establishment of this Plan and the
designation of a Director as a Participant, shall not give any Participant the
right to continued as a Director or limit the right of any of the Companies to
dismiss the Director or fail to nominate the Director for reelection.
 
  8.5. Notice. Any and all notices, designations or reports provided for
herein shall be in writing and delivered personally or by certified mail,
return receipt requested, addressed, in the case of the Company to the
Corporate Secretary at 770 North Water Street, Milwaukee, Wisconsin 53202 and,
in the case of a Participant or Beneficiary, to his home address as shown on
the records of the Company. The addresses referenced herein may be changed by
a notice delivered in accordance with the requirement of this Paragraph 8.5.
 
                                      A-6
<PAGE>
 
                                                             (Supplemental Copy)

                             AMENDED AND RESTATED
                         MARSHALL & ILSLEY CORPORATION
                 1994 LONG-TERM INCENTIVE PLAN FOR EXECUTIVES
              (as amended and restated through February 12, 1998)

1.   PURPOSE OF THE PLAN.
          The purpose of the Plan is to promote the best interests of Marshall &
Ilsley Corporation and enhance shareholder value by attracting and retaining key
personnel and providing such employees with an incentive to put forth maximum
effort for the continued success and growth of the Company.

2.   DEFINITIONS.
     (a) "Account" shall mean the account established and administered for the
benefit of a Participant under the Plan.

     (b) "Code" shall mean the Internal Revenue Code of 1986, as amended.

     (c) "Committee" shall mean the Committee of the Board of Directors
constituted as provided in Paragraph 3 of the Plan.

     (d) "Company" shall mean Marshall & Ilsley Corporation, a Wisconsin
corporation.

     (e) "Employees" shall mean those individuals who are executive officers or
senior managers of the Company or its Subsidiaries.

     (f) "Market Price" shall mean the closing sale price of a Share on the
NASDAQ National Market System as reported in the Midwest Edition of the Wall
Street Journal, or such other market price as the Committee may determine in
conformity with pertinent law and regulations of the Treasury Department.

     (g) "1934 Act" shall mean the Securities Exchange Act of 1934, as amended.

     (h) "Parent" shall mean a parent corporation of the Company as defined in
Section 424(e) of the Code.

     (i) "Participant" shall mean an Employee designated by the Committee to be
a participant in the Plan.

     (j) "Plan" shall mean the 1994 Long-Term Incentive Plan for Executives of
the Company.
<PAGE>
 
     (k) "Share" or "Shares" shall mean the $ 1.00 par value common stock of the
Company.

     (l) "Subsidiary" shall mean a subsidiary corporation of the Company as
defined in Section 424(f) of the Code.

     (m) "Triggering Event" shall mean any of the following: (a) the
acquisition, by any person or group of persons other than the Company or a
Subsidiary, of twenty-five percent (25%) or more of the outstanding shares of
the common stock of the Company pursuant to a tender or exchange offer; (b) the
acquisition, by any person or group of persons, of the beneficial ownership or
the right to acquire beneficial ownership of twenty-five percent (25%) or more
of the outstanding shares of the common stock of the Company (the term "group"
and "beneficial ownership" as used in this paragraph having the meanings
assigned thereto in Section 13(d) of the 1934 Act and the regulations
promulgated thereunder); or (c) the shareholders of the common stock of the
Company approve a transaction whereby the Company (or any Subsidiary or
Subsidiaries in the aggregate representing at least 25% of the consolidated
assets of the Company), will (i) merge or consolidate with, or enter into any
similar transaction with any person, in which the Company or Subsidiary is not
the survivor (ii) sell, lease or otherwise dispose of all or substantially all
of the assets of the Company or such Subsidiary or (iii) sell or otherwise
dispose of (including by way of merger, consolidation, share exchange or any
similar transaction) securities representing twenty-five percent (25%) or more
of the voting power of the Company or such Subsidiary.

     (n) "Unit" shall mean a bookkeeping entry used by the Company to record and
account for the grant of an award under the Plan denominated in Shares until
such time as the award is paid, cancelled, forfeited or terminated, as the case
may be.

3.   ADMINISTRATION OF THE PLAN.

     (a) The Plan shall be administered by the Committee. The Committee shall
consist of not less than three members of the Board of Directors of the Company
and shall be so constituted as to permit the Plan to comply with Rule 16b-3
under the 1934 Act, as such rule is currently in effect or as hereafter modified
or amended ("Rule 16b-3"), Section 162(m) of the Code, or any successor rule or
other statutory or regulatory requirements. The members of the Committee shall
be appointed from time to time by the Board of Directors.

     (b) The Committee shall have sole authority in its discretion, but always
subject to the express provisions of the Plan, to determine the Employees who
will be Participants, the number of Units which will be credited to each
Account, the performance criteria for earning the Units credited to each Account
and the period of time to which the performance criteria will be applied; to
interpret the plan; to prescribe, amend and rescind rules and regulations
pertaining to the Plan; to determine the terms and provisions of the respective
awards to Participants; and to make all other determinations and interpretations
deemed necessary or advisable for the

                                       2
<PAGE>
 
administration of the Plan. The Committee's determination of the foregoing
matter shall be conclusive and binding on the Company, all Employees, all
Participants and all other persons.


4.   ELIGIBILITY.

     Only Employees shall be eligible to be Participants under the Plan. In
determining which Employees will be Participants and the amount of the award
hereunder, the Committee may take into account the nature of the services
rendered by the respective Employees, their present and potential contributions
to the success of the Company, and other such factors as the Committee in its
discretion shall deem relevant. An Employee who has been granted an award under
the Plan may be granted additional awards under the Plan if the Committee shall
so determine. The Company shall effect the granting of awards hereunder in such
manner as the Committee determines. No award may be granted under the Plan to a
member of the Committee.

5.   ESTABLISHMENT OF ACCOUNTS.

     The Company shall establish on its books of account a separate Account for
each Participant, which shall be used for the purpose of determining the
compensation to which the Participant from time to time may be entitled
hereunder. There shall be recorded in each Participant's Account the number of
Units from time to time credited to the Participant by the Committee or pursuant
to Paragraph 8 hereof. In no event will more than 1,200,000 Units, subject to
adjustment under Paragraph 10 hereof, be granted under the Plan (excluding Units
credited in lieu of dividends under Paragraph 8 hereof). No more that 300,000
Units will be granted to any one individual (again excluding Units credited in
lieu of dividends and subject to adjustment under Paragraph 10). Accounts shall
be maintained solely for accounting purposes, and no assets of the Company shall
be segregated or subject to any trust for any Participant's benefit by reason of
the establishment of the Participant's Account. In addition, no Participant
shall acquire any rights as a shareholder of the Company, including the right to
vote with respect to any matter before the shareholders of the Company or to
receive dividends payable on the common stock, or, except as is specifically
provided otherwise herein, any other rights, by reason of the establishment of
the Participant's Account.

6.   PERFORMANCE CRITERIA.

     The Committee shall establish performance criteria which will govern
whether and to what extent Participants will receive a pay-out of their
Accounts. The criteria among which the Committee may choose in establishing
performance criteria are one or more of earnings per share, net income, return
on average assets, return on average equity, total shareholder return or cost
control of the Company and/or one or more of its Subsidiaries, or any other
entity in which the Company owns more than 50% of the interests entitled to
vote. The length of the performance period, the performance objectives to be
achieved during the performance period (including defining the above terms, and
if deemed appropriate, the exclusion of extraordinary items or any other
adjustments considered proper), and the measure of whether and to what degree
such objectives have been attained shall be conclusively determined by the
Committee.

                                       3
<PAGE>
 
No payment of awards under this Plan shall be made until the Committee certifies
that the performance criteria to which such awards were subject have been met.

7.   PAYMENT OF AWARDS.

     The Committee, in its sole discretion, may pay awards earned under the Plan
in cash, Shares or a combination of cash or Shares. Any Shares paid may be
treasury Shares or authorized, but unissued Shares.

8.   DIVIDENDS AND DIVIDEND EQUIVALENTS.

     At such time as dividends are paid on Shares, an Account of a Participant
shall be credited with that number of additional Units equal to the product of
(a) the number of Units then in the Account times (b) the amount of the dividend
per Share divided by (c) the Market Price of a Share on the date a dividend is
paid.

9.   TERMINATION OF EMPLOYMENT.

     (a) Any Participant whose employment with the Company or a Subsidiary is
terminated due to retirement on such Participant's normal retirement date (as
defined in the M&I Retirement Growth Plan or any successor thereto) or due to
early retirement with the consent of the Committee shall continue as a
Participant in the Plan as to Units already awarded (and any dividends or
dividend equivalents earned in connection therewith), but shall not be entitled
to the award of any additional Units by the Committee.

     (b) Any Participant whose employment with the Company or a Subsidiary is
terminated due to disability (as defined in Section 22(e)(3) of the Code) or
death, or any Participant who dies after retirement, as defined in subparagraph
(a), above, but while he still is a Participant in the Plan, shall continue as a
Participant in the Plan as to Units already awarded (and any dividends or
dividend equivalents earned in connection therewith) until the close of the
calendar year in which the Participant dies or is disabled. The Committee will
determine if and to what extent the performance criteria it established have
been met as of the close of the calendar year. Based on this determination, a
Participant, or, in the case of death, his beneficiary as determined pursuant to
Paragraph 12, hereof, shall receive a prorated award within 90 days of the end
of the calendar year based on a fraction, the numerator of which is the number
of days from the beginning of the award period to the date of death or
disability and the denominator of which is the total number of days in the award
period.

     (c) If a Participant's employment is terminated for any reason other than
those specified in subparagraphs (a) and (b), above, his participation in the
Plan shall immediately cease and he shall not be entitled to any award under the
Plan, unless the Committee, in its sole discretion, determines otherwise.

     (d) Notwithstanding the foregoing, if (i) a Participant's employment is
terminated as a result of, or in anticipation of, a Triggering Event, or (ii) a
Participant's employment is not

                                       4
<PAGE>
 
terminated, but a Triggering Event occurs, a Participant shall receive an amount
equal to the amount he would be entitled to receive at the close of the
performance period based on the extent to which the performance criteria set by
the Committee have been met as of the date of the Triggering Event. Payment of
the amount to which the Participant is entitled hereunder shall be made within
30 days after the occurrence of the Triggering Event.

     (e) The Plan does not confer upon any Participant any right with respect to
continuation of employment by the Company or a Subsidiary, nor shall it
interfere in any way with the right of the Company or any Subsidiary to
terminate any Participant's employment at any time.

10.  ADJUSTMENT PROVISIONS.

     If the Company shall effect a subdivision or consolidation of Shares or
other capital readjustment, the payment of a stock dividend, or other increase
or reduction in the number of Shares outstanding, or shall effect a spin-off,
split-off, or other distribution of assets to shareholders, without receiving
consideration therefor in money, services or property, the number of Units in
each Account and the number of Shares available for payment of awards hereunder
shall be appropriately adjusted by the Committee.

11.  NONASSIGNABILITY.

     No Accounts or any payment under the Plan shall be subject in any manner to
alienation, anticipation, sale, transfer (except by will or the laws of descent
and distribution), assignment, pledge, or encumbrance.  Any attempt to alienate,
sell, transfer, assign, pledge or otherwise encumber any Account or any payment
under the Plan shall be void and of no legal effect.

12.  BENEFICIARY DESIGNATION.

     If a Participant dies prior to the distribution to him of all amounts
payable to him under the Plan, the amounts otherwise distributable to the
Participant if living, shall be distributed to his designated beneficiary or
beneficiaries. All beneficiary designations shall be made in the form prescribed
by the Committee from time to time and shall be delivered to the Secretary of
the Company. If there is no effective beneficiary designation on file at the
time of the Participant's death, distribution of amounts otherwise payable to
the deceased Participant under the Plan shall be made to his Estate. If the
beneficiary designated by the Participant shall survive the Participant but die
before receiving all distributions hereunder, all amounts otherwise payable to
the deceased beneficiary shall be paid to such deceased beneficiary's Estate
unless the Participant's beneficiary designation provides otherwise. The Company
shall have no responsibility with respect to the validity of any beneficiary
designation made by a Participant and shall be fully protected if it acts
thereon in good faith.

13.  TAXES.

     The Company shall be entitled to pay or withhold the amount of any tax
which it believes is required as a result of the payment of any amounts under
the Plan, and the Company may defer

                                       5
<PAGE>
 
making payments hereunder until arrangements satisfactory to it have been made
with respect to any such withholding obligations. A Participant may, at his
election, satisfy his obligation for payment of withholding taxes by having the
Company retain a number of Shares, if payment of the Account includes Shares,
having an aggregate Market Price on the date the Shares are withheld equal to
the amount of the withholding tax or by delivering to the Company Shares already
owned by the Participant having an aggregate Market Price on the date the Shares
are delivered equal to the amount of the withholding tax. The Company shall have
the right to rely on a written opinion of legal counsel, which may be
independent legal counsel or legal counsel regularly employed by the Company, if
any question should arise as to the payment or withholding of taxes.

14.  REGULATORY APPROVALS AND RULE 16b-3.

     (a) Notwithstanding anything contained in this Plan to the contrary, the
Company shall have no obligation to issue or deliver certificates for Shares
resulting from the payment of an Account hereunder prior to (i) the obtaining of
any approval from any governmental agency which the Company shall, it its sole
discretion, determine to be necessary or advisable, (ii) the admission of such
Shares to listing on the stock exchange on which the Shares may be listed, and
(iii) the completion of any registration or other qualification of said Shares
under any state or federal law or ruling of any governmental body which the
Company shall, in its sole discretion, determine to be necessary or advisable.

     (b) It is intended that the Plan and any award made to a person subject to
Section 16 of the 1934 Act, and any transaction or election hereunder by any
such person, meet all of the requirements of Rule 16b-3.  If any provision of
the Plan or any award hereunder would disqualify the Plan or such award under,
or would not comply with, Rule 16b-3, such provision or award shall be construed
or deemed to conform to Rule 16b-3.

     (c) Any election by a Participant subject to Section 16 of the 1934 Act,
pursuant to Paragraph 13 hereof, may be made only during such times as permitted
by Rule 16b-3 and may be disapproved by the Committee at any time after the
election.

15.  EFFECTIVENESS OF THE PLAN.

     The Plan became effective upon approval by the Company's Executive
Compensation Committee and Board of Directors on March 30, 1994, subject to
ratification of the Plan by the vote of the holders of a majority of the Shares
present or represented and entitled to vote at an annual or special meeting of
the Company duly called and held which vote was received on August 23, 1994.
The amendments hereto were approved by the Board of Directors on February 12,
1998, subject to approval at the April 28, 1998 Annual Meeting of shareholders.
If shareholder approval is not obtained, any awards previously made at the
December 11, 1997 meeting of the Executive Compensation Committee will be void
and of no further effect.

                                       6
<PAGE>
 
16.  TERMINATION AND AMENDMENT.

     The Plan may be terminated, modified or amended by the Company's Board of
Directors, provided, however, that any modification or amendment which would,
under applicable law or other regulatory provisions require shareholder approval
and any amendment to increase the number of Units available for grant under the
Plan shall be subject to the affirmative vote of the holders of a majority of
the Shares of the Company present, or represented, and entitled to vote at a
meeting of the shareholders of the Company and provided, further, that no
termination, modification or amendment of the Plan may, without the consent of a
Participant, adversely affect the rights of such Participant in his Account,
other than a termination because the requisite shareholder approval is not
obtained.  In such event, any awards made subject to the consent of the
shareholders shall be void and of no further effect.

17.  GOVERNING LAW.

     The Plan shall be construed, administered and governed in all respects
under and by the applicable laws of the State of Wisconsin.

                                       7
<PAGE>
 
- --------------------------------------------------------------------------------
                                  Proxy Card
                         MARSHALL & ILSLEY CORPORATION

          This Proxy is Solicited on Behalf of the Board of Directors



     The undersigned appoints J.B. Wigdale and D.J. Kuester, and each of them, 
as proxies, each with the power to appoint his substitute, and authorizes each 
of them to represent and to vote, as designated on the reverse hereof, all of 
the shares of stock of Marshall & Ilsley Corporation held of record by the 
undersigned on February 27, 1998 at the 1998 Annual Meeting of Shareholders of 
Marshall & Ilsley Corporation to be held on April 28, 1998 or at any adjournment
thereof.

     This proxy when properly executed will be voted in the manner directed 
herein by the undersigned shareholder.  If no direction is made, this proxy will
be voted "FOR" the election of all nominees for directors, "FOR" the approval of
the amendments to the 1994 Long-Term Incentive Plan for Executives and "FOR" 
approval of the Directors Deferred Compensation Plan.





                               (Continued and to be signed on the reverse side.)
- --------------------------------------------------------------------------------
<PAGE>
 
Please mark boxes in blue or black ink.
1.  ELECTION OF CLASS II DIRECTORS:
    FOR all nominees below to serve for the terms indicated below and until 
    their successors are elected and qualified (except as marked to the contrary
    below).  [_]
    WITHHOLD AUTHORITY to vote for all nominees listed below.  [_]
    (To withhold authority to vote for any individual nominee, strike a line 
    through that nominee's name in the list below)
    Class II (with terms expiring April 2001): Jon F. Chait, D.J. Kuester,
    Edward L. Meyer, Jr., Don R. O'Hare, San W. Orr, Jr., J.A. Puelicher and
    Stuart W. Tisdale.


2.  PROPOSAL TO APPROVE AMENDMENTS TO THE 1994 LONG-TERM INCENTIVE PLAN FOR 
    EXECUTIVES:
    FOR approval of amendments to the 1994 Long-Term Incentive Plan for 
    Executives     [_]
    AGAINST approval of amendments to the 1994 Long-Term Incentive Plan for 
    Executives     [_]
    ABSTAIN from voting on amendments to the 1994 Long-Term Incentive Plan for 
    Executives     [_]

3.  PROPOSAL TO APPROVE THE DIRECTORS DEFERRED COMPENSATION PLAN:
    FOR approval of the Directors Deferred Compensation Plan            [_]
    AGAINST approval of the Directors Deferred Compensation Plan        [_]
    ABSTAIN from voting on the Directors Deferred Compensation Plan     [_]

4.  In their discretion, the Proxies are authorized to vote upon such other 
    business as may properly come before the meeting.

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

 
                                Date: ____________________________________, 1998


                                      __________________________________________
                                               (Signature of Shareholder)

                                      __________________________________________
                                      (Signature of Shareholder-if held jointly)

Please mark, sign, date and 
return this Proxy Card promptly
using the envelope provided.



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