1. Name and Address of Reporting Person
   Platten, Peter M.
   770 North Water Street
   Milwaukee, WI 53202
   USA
2. Issuer Name and Ticker or Trading Symbol
   M&I Corp-Forms (MI)
3. IRS or Social Security Number of Reporting Person (Voluntary)
4. Statement for Month/Day/Year
   04/22/2003
5. If Amendment, Date of Original (Month/Day/Year)
6. Relationship of Reporting Person(s) to Issuer (Check all applicable)
   (X) Director                   ( ) 10% Owner
   ( ) Officer (give title below) ( ) Other (specify below)
7. Individual or Joint/Group Filing (Check Applicable Line)
   (X) Form filed by One Reporting Person
   ( ) Form filed by More than One Reporting Person

TABLE I -- Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

+------------------------------+----------+----------+---------+--------------------------+--------------+-----------+------------+
|1. Title of Security          |2. Trans- |2A.Execu- |3. Trans-|4. Securities Acquired (A)|5. Amount of  |6. Owner-  |7. Nature   |
|                              |   action |   action |   action|   or Disposed of (D)     |Securities    |   ship    |   of In-   |
|                              |   Date   |   Date   |   Code  |                          |Beneficially  |   Form:   |   direct   |
|                              |          |          |         |                          |Owned         |   Direct  |   Bene-    |
|                              |  (Month/ |  (Month/ |         |                          |Following     |   (D) or  |   ficial   |
|                              |   Day/   |   Day/   +-----+---+-----------+---+----------+Reported      |   Indirect|   Owner-   |
|                              |   Year)  |   Year)  |Code |V  |Amount     |A/D|Price     |Transaction(s)|   (I)     |   ship     |
+------------------------------+----------+----------+-----+---+-----------+---+----------+--------------+-----------+------------+
                                                                                        
Common Stock                                                                               141950F1       D
Common Stock                                                                               5234           I           Spouse
Common Stock                                                                               85780          I           Peter Platten
                                                                                                                      Properties
Common Stock                                                                               5652           I           IRA Spouse
Common Stock                                                                               22721.788      I           IRA DRP
Common Stock                                                                               44184          I           401(K) Plan
Common Stock                                                                               48532          I           Irrev. Trust
Common Stock                                                                               129278         I           Family Trust
Common Stock                                                                               9170           I           IRA
Common Stock                                                                               3300           I           1998
                                                                                                                      Education
                                                                                                                      Trust
                                                                                                                      (Spouse)
Common Stock                                                                               2050           I           Education
                                                                                                                      Trust
Common Stock                                                                               1430           I           1999
                                                                                                                      Education
                                                                                                                      Trust
                                                                                                                      (Spouse)
Common Stock                                                                               1090           I           2000
                                                                                                                      Education
                                                                                                                      Trust
                                                                                                                      (Spouse)
Common Stock                                                                               680            I           2001
                                                                                                                      Education
                                                                                                                      Trust
                                                                                                                      (Spouse)





TABLE II -- Derivative Securities Acquired, Disposed of, or Beneficially Owned

+----------+--------+-------+-------+---------+-----------+---------------------+----------------+----------+-------+-------+------+
|1.        |2.      |3.     |3A.    |4.       |5.         |6.                   |7.              |8.        |9.     |10.    |11.   |
|          |        |       |       |         |           |                     |                |          |Number |Owner- |      |
|          |        |       |       |         |           |                     |                |          |of     |ship   |      |
|          |        |       |       |         |           |                     |                |          |Deriv- |Form of|      |
|          |        |       |       |         |           |                     |Title and Amount|          |ative  |Deriv- |      |
|          |        |       |       |         |           |                     |of Underlying   |          |Secur- |ative  |Nature|
|          |Conver- |Trans- |Execu- |         |Number of  |                     |Securities      |          |ities  |Secur- |of    |
|          |sion or |action |tion   |         |Derivative |Date Exercisable     +-------+--------+          |Benefi-|ity:   |In-   |
|          |Exercise|Date   |Date   |         |Securities |and Expiration Date  |       |Amount  |          |cially |Direct |direct|
|          |Price of|       |       |Transac- |Acquired(A)|(Month/Day/Year)     |       |or      |          |Owned  |(D) or |Bene- |
|Title of  |Deriv-  |(Month/|(Month/|tion Code|Disposed(D)+----------+----------+       |Number  |Price of  |       |In-    |ficial|
|Derivative|ative   | Day/  | Day/  +------+--+-----+-----+Date Exer-|Expira-   |       |of      |Derivative|       |direct |Owner-|
|Security  |Security|Year)  |Year)  |Code  |V |(A)  |(D)  |cisable   |tion Date |Title  |Shares  |Security  |       |(I)    |ship  |
+----------+--------+-------+-------+------+--+-----+-----+----------+----------+-------+--------+----------+-------+-------+------+
                                                                                
Stock       $29.27   04/22/2 04/22/2 A         15000       04/22/2003 04/22/2013 Common  15000    $0.0000    15000   D
Option               003     003                                                 Stock

Explanation of Responses:


The share balances give effect to a 2-for-1 stock split in the form of a stock
dividend paid on June 14, 2002.



SIGNATURE OF REPORTING PERSON
/s/ Ryan E. Daniels

DATE
04/23/2003