MECON INC
SC 13G/A, 1997-02-21
COMPUTER PROGRAMMING SERVICES
Previous: VISIONEER INC, 10-Q/A, 1997-02-21
Next: TOLLGRADE COMMUNICATIONS INC PA, SC 13G/A, 1997-02-21



<PAGE>   1
                                                    ---------------------------
                                                           OMB APPROVAL
                                                    ---------------------------
                                                    OMBA NUMBER:  3235-0145
                                                    Expires:  October 31, 1994
                                                    Estimated average burden
                                                    hours per response... 14.90
                                                    ---------------------------
                                 UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  SCHEDULE 13G

                   Under the Securities Exchange Act of 1934

                              (Amendment No. 1)*


                                    MECON
- --------------------------------------------------------------------------------
                              (Name of Issuer)


                                Common Stock
- --------------------------------------------------------------------------------
                         (Title of Class of Securities)

                                  58400M105
                     -----------------------------------
                               (CUSIP Number)

*The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities,
and for any subsequent amendment containing information which would alter the
disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be
deemed to be "filed" for the purpose of Section 18 of the Securities Exchange
Act of 1934 ("Act") or otherwise subject to the liabilities of that section of
the Act but shall be subject to all other provisions of the Act (however, see
the Notes).


              IN ACCORDANCE WITH RULE 201 OF REGULATION S-T, THIS
        SCHEDULE 13G IS BEING FILED IN PAPER PURSUANT TO A TEMPORARY
                             HARDSHIP EXEMPTION.


                              Page 1 of 10 pages

<PAGE>   2
- -------------------                                           ------------------
CUSIP No. 58400M105                  13G                      Page 3 of 10 Pages
- -------------------                                           ------------------

- --------------------------------------------------------------------------------
 1   NAME OF REPORTING PERSON
     S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

         Artisan Investment Corporation 39-1807187


- --------------------------------------------------------------------------------
 2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                   
                                                                         
                                                                         (a) [ ]
         Not Applicable
                                                                         (b) [ ]

- --------------------------------------------------------------------------------
 3   SEC USE ONLY


- --------------------------------------------------------------------------------
 4   CITIZENSHIP OR PLACE OF ORGANIZATION

         Delaware

- --------------------------------------------------------------------------------
                 5  SOLE VOTING POWER
                 
                 ---------------------------------------------------------------
  NUMBER OF      6  SHARED VOTING POWER
   SHARES                 
BENEFICIALLY          0
  OWNED BY       ---------------------------------------------------------------
    EACH         7  SOLE DISPOSITIVE POWER
 REPORTING       
   PERSON   
    WITH         ---------------------------------------------------------------
                 8  SHARED DISPOSITIVE POWER

                      0
- --------------------------------------------------------------------------------
 9   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         0

- --------------------------------------------------------------------------------
10   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

         Not Applicable                                                      [ ]

- --------------------------------------------------------------------------------
11   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

         0%

- --------------------------------------------------------------------------------
12   TYPE OF REPORTING PERSON*

         CO

- --------------------------------------------------------------------------------
                      *SEE INSTRUCTION BEFORE FILLING OUT!

<PAGE>   3
- -------------------                                           ------------------
CUSIP No. 58400M105                  13G                      Page 2 of 10 Pages
- -------------------                                           ------------------

- --------------------------------------------------------------------------------
 1   NAME OF REPORTING PERSON
     S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

         Artisan Partners Limited Partnership  39-1807188


- --------------------------------------------------------------------------------
 2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                   
                                                                         
                                                                         (a) [ ]
         Not Applicable
                                                                         (b) [ ]

- --------------------------------------------------------------------------------
 3   SEC USE ONLY


- --------------------------------------------------------------------------------
 4   CITIZENSHIP OR PLACE OF ORGANIZATION

         Delaware

- --------------------------------------------------------------------------------
                 5  SOLE VOTING POWER
                 
                 ---------------------------------------------------------------
  NUMBER OF      6  SHARED VOTING POWER
   SHARES                 
BENEFICIALLY          0
  OWNED BY       ---------------------------------------------------------------
    EACH         7  SOLE DISPOSITIVE POWER
 REPORTING       
   PERSON   
    WITH         ---------------------------------------------------------------
                 8  SHARED DISPOSITIVE POWER

                      0
- --------------------------------------------------------------------------------
 9   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         0

- --------------------------------------------------------------------------------
10   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

         Not Applicable                                                      [ ]

- --------------------------------------------------------------------------------
11   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

         0%

- --------------------------------------------------------------------------------
12   TYPE OF REPORTING PERSON*

         IA

- --------------------------------------------------------------------------------
                      *SEE INSTRUCTION BEFORE FILLING OUT!

<PAGE>   4
- -------------------                                           ------------------
CUSIP No. 58400M105                  13G                      Page 4 of 10 Pages
- -------------------                                           ------------------

- --------------------------------------------------------------------------------
 1   NAME OF REPORTING PERSON
     S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

         Andrew A. Ziegler


- --------------------------------------------------------------------------------
 2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                   
                                                                         
                                                                         (a) [ ]
         Not Applicable
                                                                         (b) [ ]

- --------------------------------------------------------------------------------
 3   SEC USE ONLY


- --------------------------------------------------------------------------------
 4   CITIZENSHIP OR PLACE OF ORGANIZATION

         U.S. Citizen

- --------------------------------------------------------------------------------
                 5  SOLE VOTING POWER
                 
                 ---------------------------------------------------------------
  NUMBER OF      6  SHARED VOTING POWER
   SHARES                 
BENEFICIALLY          0
  OWNED BY       ---------------------------------------------------------------
    EACH         7  SOLE DISPOSITIVE POWER
 REPORTING       
   PERSON   
    WITH         ---------------------------------------------------------------
                 8  SHARED DISPOSITIVE POWER

                      0
- --------------------------------------------------------------------------------
 9   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         0

- --------------------------------------------------------------------------------
10   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

         Not Applicable                                                      [ ]

- --------------------------------------------------------------------------------
11   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

         0%

- --------------------------------------------------------------------------------
12   TYPE OF REPORTING PERSON*

         IN

- --------------------------------------------------------------------------------
                      *SEE INSTRUCTION BEFORE FILLING OUT!

<PAGE>   5
- -------------------                                           ------------------
CUSIP No. 58400M105                  13G                      Page 5 of 10 Pages
- -------------------                                           ------------------

- --------------------------------------------------------------------------------
 1   NAME OF REPORTING PERSON
     S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

         Carlene Murphy Ziegler


- --------------------------------------------------------------------------------
 2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                   
                                                                         
                                                                         (a) [ ]
         Not Applicable
                                                                         (b) [ ]

- --------------------------------------------------------------------------------
 3   SEC USE ONLY


- --------------------------------------------------------------------------------
 4   CITIZENSHIP OR PLACE OF ORGANIZATION

         U.S. Citizen

- --------------------------------------------------------------------------------
                 5  SOLE VOTING POWER
                 
                 ---------------------------------------------------------------
  NUMBER OF      6  SHARED VOTING POWER
   SHARES                 
BENEFICIALLY          0
  OWNED BY       ---------------------------------------------------------------
    EACH         7  SOLE DISPOSITIVE POWER
 REPORTING       
   PERSON   
    WITH         ---------------------------------------------------------------
                 8  SHARED DISPOSITIVE POWER

                      0
- --------------------------------------------------------------------------------
 9   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

         0

- --------------------------------------------------------------------------------
10   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

         Not Applicable                                                      [ ]

- --------------------------------------------------------------------------------
11   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

         0%

- --------------------------------------------------------------------------------
12   TYPE OF REPORTING PERSON*

         IN

- --------------------------------------------------------------------------------
                      *SEE INSTRUCTION BEFORE FILLING OUT!

<PAGE>   6
        
        Item 1(a)       Name of Issuer:

                             MECON

        Item 1(b)       Address of Issuer's Principal Executive Offices:

                             200 Porter Drive, Suite 100
                             San Ramon, California 94583

        Item 2(a)       Name of Person Filing:
        
        
                             Artisan Partners Limited Partnership ("Artisan
                             Partners");
                             Artisan Investment Corporation, the general 
                                 partner of Artisan Partners ("Artisan Corp.");
                             Andrew A. Ziegler ("A. Ziegler");
                             Carlene Murphy Ziegler ("C. Ziegler").

        Item 2(b)       Address of Principal Business Office:
        
        
                             Artisan Partners, Artisan Corp., A. Ziegler and C.
                             Ziegler are all located at:
                             
                             1000 N. Water Street, Suite 1770
                             Milwaukee, Wisconsin 53202

        Item 2(c)       Citizenship:
        
                             Artisan Partners is a Delaware limited partnership.
                             Artisan Corp. is a Delaware corporation.
                             A. Ziegler and C. Ziegler are each U.S. citizens.
        
        Item 2(d)       Title of Class of Securities:

                             Common Stock

        Item 2(e)       CUSIP Number:

                             58400M105

        Item 3          Type of Person:
        
                             (e) Artisan Partners is an investment adviser
                             registered under Section 203 of the Investment
                             Advisers Act of 1940; Artisan Corp. is the general
                             partner of Artisan Partners; A. Ziegler and C.
                             Ziegler are the principal stockholders of Artisan
                             Corp.
        

<PAGE>   7
   Item 4       Ownership (at December 31, 1996):

                        (a)   Amount owned "beneficially" within the meaning of 
                              rule 13d-3:

                              0

                        (b)   Percent of class:

                              0%

                        (c)   Number of shares as to which such person has:

                                  (i)  sole power to vote or to direct the vote:

                                 (ii)  shared power to vote or to direct the 
                                       vote:  0

                                (iii)  sole power to dispose or to direct the
                                       disposition of:
 
                                 (iv)  shared power to dispose or to direct 
                                       disposition of:  0


                        Artisan Partners serves as investment adviser to
                        Artisan Funds, Inc., series designated Artisan Small
                        Cap Fund (the "Fund").  Various limited partners and
                        employees of Artisan Partners are also officers and
                        directors of the Fund, but Artisan Partners does not
                        consider the Fund to be controlled by such persons.
                        Although the Fund is not controlled by Artisan
                        Partners, pursuant to Rule 13d-3(a) the shares
                        beneficially owned by the Fund, with respect to which
                        the Fund has delegated to Artisan Partners shared
                        voting power and shared dispositive power, are
                        considered to be shares beneficially owned by Artisan
                        Partners by reason of such delegated powers.

   Item 5       Ownership of Five Percent or Less of a Class:

                        If this statement is being filed to report the fact
                        that as of the date hereof the reporting person has
                        ceased to be the beneficial owner of more than five
                        percent of the class of the securities, check the
                        following (X).

   Item 6       Ownership of More than Five Percent on Behalf of Another Person:

                        The shares reported herein have been acquired on behalf
                        of discretionary clients of Artisan Partners.  Persons
                        other than Artisan Partners are entitled to receive all
                        dividends from, and proceeds from the sale of, those
                        shares.

   Item 7       Identification and Classification of the Subsidiary Which 
                Acquired the Security Being Reported on by the Parent Holding 
                Company:

                        Not Applicable




                              Page 7 of 10 pages

<PAGE>   8
    Item 8       Identification and Classification of Members of the Group:
        
                        Not Applicable
        
    Item 9       Notice of Dissolution of Group:
        
                        Not Applicable
        
    Item 10      Certification:

                        By signing below I certify that, to the best of my
                 knowledge and belief, the securities referred to above were
                 acquired in the ordinary course of business and were not
                 acquired for the purpose of and do not have the effect of
                 changing or influencing the control of the issuer of such
                 securities and were not acquired in connection with or as a
                 participant in any transaction having such purpose or effect.
                 
                      The filing of this statement should not be construed as
                 an admission that the reporting persons is or are for the
                 purposes of Section 13(d) or 13(g) of the Securities Exchange
                 Act of 1934, the beneficial owner of any registered equity
                 securities of the issuer.






                              Page 8 of 10 pages

<PAGE>   9
                                  Signature

     After reasonable inquiry and to the best of my knowledge and belief, I
certify that the information set forth in this statement is true, complete and
correct.

Date:  February 14, 1997

        The undersigned corporation, on the date above written, agrees and 
        consents to the joint filing on its behalf of this Schedule 13G in
        connection with its beneficial ownership of the security reported
        herein.
        
                                        ARTISAN INVESTMENT CORPORATION, for
                                        itself and as general partner of
                                        ARTISAN PARTNERS LIMITED PARTNERSHIP

                                        By:  /s/ John M. Blaser
                                             ----------------------------------
                                             John M. Blaser
                                             Vice President

        The undersigned individuals, on the date above written, agree and
        consent to the joint filing on their behalf of this Schedule 13G in
        connection with their beneficial ownership of the security reported
        herein.
        

                                             ANDREW A. ZIEGLER



                                             /s/ Andrew A. Ziegler
                                             ----------------------------------



                                             CARLENE MURPHY ZIEGLER



                                             /s/ Carlene Murphy Ziegler
                                             ----------------------------------






                              Page 9 of 10 pages
<PAGE>   10
                                                   ----------------------------
                                                           OMB APPROVAL
                                                   ----------------------------
                                                    OMBA Number:  3235-0145
                                                    Expires:  October 31, 1994
                                                    Estimated average burden
                                                    hours per response ... 14.90
                                                   -----------------------------


                                UNITED STATES
                      SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C. 20549

                                 SCHEDULE 13G

                  Under the Securities Exchange Act of 1934

                           (Amendment No.        )*

                                    MECON
- --------------------------------------------------------------------------------
                               (Name of Issuer)
                                      
                                 Common Stock
- --------------------------------------------------------------------------------
                        (Title of Class of Securities)

                                  58400M105
                            ---------------------
                                (CUSIP Number)

Check the following box if a fee is being paid with this statement [X]. 
(A fee is not required only if the filing person:  (1) has a previous statement
on file reporting beneficial ownership of more than five percent of the class
of securities described in Item 1; and (2) has filed no amendment subsequent
thereto reporting beneficial ownership of five percent or less of such class.)
(See Rule 13d-7).

*The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities,
and for any subsequent amendment containing information which would alter the
disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be
deemed to be "filed" for the purpose of Section 18 of the Securities Exchange
Act of 1934 ("Act") or otherwise subject to the liabilities of that section of
the Act but shall be subject to all other provisions of the Act (however, see
the Notes).



SEC 1745 (2/92)             Page 1 of 9 pages      

<PAGE>   11




- -------------------                                      -----------------
CUSIP No. 58400M105                 13G                  Page 2 of 9 Pages
- -------------------                                      -----------------

- --------------------------------------------------------------------------------
 1      NAME OF REPORTING PERSON
        S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

        Artisan Partners Limited Partnership  39-180-7188

- --------------------------------------------------------------------------------
 2      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* 
        Not Applicable                                     (a)    
                                                           (b)   

- --------------------------------------------------------------------------------
 3      SEC USE ONLY                                                       

- --------------------------------------------------------------------------------
 4      CITIZENSHIP OR PLACE OF ORGANIZATION        
                            
        Delaware

- --------------------------------------------------------------------------------
                                            5         SOLE VOTING POWER
                               
                   NUMBER OF                ------------------------------------
                     SHARES                 6         SHARED VOTING POWER
                  BENEFICIALLY     
                    OWNED BY                            356,400
                      EACH         
                    REPORTING               ------------------------------------
                     PERSON                 7         SOLE DISPOSITIVE POWER 
                      WITH         
                                            ------------------------------------
                                            8         SHARED DISPOSITIVE POWER

                                                      356,400
                               
- --------------------------------------------------------------------------------
      
 9      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
        356,400
- --------------------------------------------------------------------------------

10      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

        Not Applicable                                       
- --------------------------------------------------------------------------------

11      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
        
        6.45%
- --------------------------------------------------------------------------------
        
12      TYPE OF REPORTING PERSON*

        IA
- --------------------------------------------------------------------------------
        

                    *SEE INSTRUCTION BEFORE FILLING OUT!


<PAGE>   12

- -------------------                                      -----------------
CUSIP No. 58400M105                 13G                  Page 3 of 9 Pages
- -------------------                                      -----------------

- --------------------------------------------------------------------------------
 1      NAME OF REPORTING PERSON
        S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

        Artisan Investment Corporation 39-180-7187         

- --------------------------------------------------------------------------------
 2      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* 
        Not Applicable                                      (a)    
                                                            (b)   

- --------------------------------------------------------------------------------
 3      SEC USE ONLY                                                       

- --------------------------------------------------------------------------------
 4      CITIZENSHIP OR PLACE OF ORGANIZATION        
                            
        Delaware

- --------------------------------------------------------------------------------
                                            5         SOLE VOTING POWER
                               
                   NUMBER OF                ------------------------------------
                     SHARES                 6         SHARED VOTING POWER
                  BENEFICIALLY  
                    OWNED BY                          356,400
                      EACH       
                    REPORTING               ------------------------------------
                     PERSON                 7         SOLE DISPOSITIVE POWER 
                      WITH       
                                            ------------------------------------
                                            8         SHARED DISPOSITIVE POWER 

                                                      356,400

- --------------------------------------------------------------------------------
 9      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

        356,400
- --------------------------------------------------------------------------------

10      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

        Not Applicable                                       
- --------------------------------------------------------------------------------

11      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
        
        6.45%
- --------------------------------------------------------------------------------
        
12      TYPE OF REPORTING PERSON*

        CO
- --------------------------------------------------------------------------------
        

                    *SEE INSTRUCTION BEFORE FILLING OUT!

<PAGE>   13

- -------------------                                      -----------------
CUSIP No. 58400M105                 13G                  Page 4 of 9 Pages
- -------------------                                      -----------------

- --------------------------------------------------------------------------------
 1      NAME OF REPORTING PERSON
        S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

        Andrew A. Ziegler ###-##-####                         

- --------------------------------------------------------------------------------
 2      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* 
        Not Applicable                                      (a)    
                                                            (b)    

- --------------------------------------------------------------------------------
 3      SEC USE ONLY                                                       

- --------------------------------------------------------------------------------
 4      CITIZENSHIP OR PLACE OF ORGANIZATION        
                            
        U.S. Citizen

- --------------------------------------------------------------------------------
                                            5         SOLE VOTING POWER
                               
                   NUMBER OF                ------------------------------------
                     SHARES                 6         SHARED VOTING POWER
                  BENEFICIALLY  
                    OWNED BY                          356,400
                      EACH       
                    REPORTING               ------------------------------------
                     PERSON                 7         SOLE DISPOSITIVE POWER 
                      WITH       
                                            ------------------------------------
                                            8         SHARED DISPOSITIVE POWER 

                                                      356,400
- --------------------------------------------------------------------------------
 9      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

        356,400
- --------------------------------------------------------------------------------

10      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

        Not Applicable                                       
- --------------------------------------------------------------------------------

11      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
        
        6.45%
- --------------------------------------------------------------------------------
        
12      TYPE OF REPORTING PERSON*

        IN
- --------------------------------------------------------------------------------
        

                    *SEE INSTRUCTION BEFORE FILLING OUT!

<PAGE>   14

- -------------------                                      -----------------
CUSIP No. 58400M105                 13G                  Page 5 of 9 Pages
- -------------------                                      -----------------

- --------------------------------------------------------------------------------
 1      NAME OF REPORTING PERSON
        S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

        Carlene Murphy Ziegler ###-##-####                    

- --------------------------------------------------------------------------------
 2      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* 
        Not Applicable                                      (a)   
                                                            (b)   

- --------------------------------------------------------------------------------
 3      SEC USE ONLY                                                       

- --------------------------------------------------------------------------------
 4      CITIZENSHIP OR PLACE OF ORGANIZATION        
                            
        U.S. Citizen

- --------------------------------------------------------------------------------
                                            5         SOLE VOTING POWER
                               
                   NUMBER OF                ------------------------------------
                     SHARES                 6         SHARED VOTING POWER
                  BENEFICIALLY  
                    OWNED BY                          356,400
                      EACH       
                    REPORTING               ------------------------------------
                     PERSON                 7         SOLE DISPOSITIVE POWER 
                      WITH       
                                            ------------------------------------
                                            8         SHARED DISPOSITIVE POWER 

                                                      356,400
- --------------------------------------------------------------------------------
 9      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

        356,400
- --------------------------------------------------------------------------------

10      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

        Not Applicable                                      
- --------------------------------------------------------------------------------

11      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
        
        6.45%
- --------------------------------------------------------------------------------
        
12      TYPE OF REPORTING PERSON*

        IN
- --------------------------------------------------------------------------------
        

                    *SEE INSTRUCTION BEFORE FILLING OUT!
<PAGE>   15

  Item 1(a)  Name of Issuer:

                   MECON

  Item 1(b)  Address of Issuer's Principal Executive Offices:

                   200 Porter Drive, Suite 100
                   San Ramon, California 94583

  Item 2(a)  Name of Person Filing:

                   Artisan Partners Limited Partnership ("Artisan Partners");
                   Artisan Investment Corporation ("Artisan Corp.");
                   Andrew A. Ziegler ("A. Ziegler");
                   Carlene Murphy Ziegler ("C. Ziegler").

  Item 2(b)  Address of Principal Business Office:
                   Artisan Partners, Artisan Corp., A. Ziegler and C.
                   Ziegler are all located at:
                   1000 N. Water Street, Suite 1770
                   Milwaukee, Wisconsin 53202

  Item 2(c)  Citizenship:

                   Artisan Partners is a Delaware limited partnership.
                   Artisan Corp. is a Delaware corporation.
                   A. Ziegler and C. Ziegler are each U.S. citizens.
                   
  Item 2(d)  Title of Class of Securities:

                   Common Stock

  Item 2(e)  CUSIP Number:

                   58400M105

  Item 3     Type of Person:

                   (e) Artisan Partners is an investment adviser
                   registered under Section 203 of the Investment Advisers
                   Act of 1940; Artisan Corp. is the general partner of
                   Artisan Partners; A. Ziegler and C. Ziegler are the
                   principal stockholders of Artisan Corp.
                   
  Item 4     Ownership (at December 31, 1995):

                   (a)  Amount owned "beneficially" within the meaning of
                        rule 13d-3:
                   
                        356,400
                   
                   
                              Page 6 of 9 pages
<PAGE>   16



                   (b) Percent of class:

                        6.45%

                   (c)  Number of shares as to which such person has:
                        
                                  (i)  sole power to vote or to direct the vote:

 
                                (ii)  shared power to vote or to direct the 
                                       vote:
                                       356,400

                                 (iii) sole power to dispose or to direct the
                                       disposition of:


                                 (iv)  shared power to dispose or to direct 
                                       disposition of:  
                                       356,400


                   Artisan Partners serves as investment adviser to Artisan
                   Funds, Inc., series designated Artisan Small Cap Fund (the
                   "Fund").  Various limited partners and employees of Artisan
                   Partners are also officers and directors of the Fund, but
                   Artisan Partners does not consider the Fund to be controlled
                   by such persons. Although the Fund is not controlled by
                   Artisan Partners, pursuant to Rule 13d-3(a) the shares
                   beneficially owned by the Fund, with respect to which the
                   Fund has delegated to Artisan Partners shared voting power
                   and shared dispositive power, are considered to be shares
                   beneficially owned by Artisan Partners by reason of such
                   delegated powers.
                   
Item 5  Ownership of Five Percent or Less of a Class:

                Not Applicable

Item 6  Ownership of More than Five Percent on Behalf of Another Person:


                The shares reported herein have been acquired on behalf
                of discretionary clients of Artisan Partners.  Persons other
                than Artisan Partners are entitled to receive all dividends
                from, and proceeds from the sale of, those shares.
         
Item 7   Identification and Classification of the Subsidiary Which Acquired the
         Security Being Reported on by the Parent Holding Company:

                Not Applicable

Item 8   Identification and Classification of Members of the Group:

                Not Applicable

Item 9   Notice of Dissolution of Group:

                Not Applicable


                               Page 7 of 9 pages


<PAGE>   17



Item 10  Certification:

         
              By signing below I certify that, to the best of my
         knowledge and belief, the securities referred to above were
         acquired in the ordinary course of business and were not
         acquired for the purpose of and do not have the effect of
         changing or influencing the control of the issuer of such
         securities and were not acquired in connection with or as a
         participant in any transaction having such purpose or effect.
         
              The filing of this statement should not be construed as
         an admission that the reporting person(s) is or are for the
         purposes of Section 13(d) or 13(g) of the Securities Exchange
         Act of 1934, the beneficial owner of any registered equity
         securities of the issuer.
         
                              Page 8 of 9 pages
         

<PAGE>   18




                                   Signature

     After reasonable inquiry and to the best of my knowledge and belief, I
certify that the information set forth in this statement is true, complete and
correct.

Date:  February 13, 1996

           The undersigned corporation, on the date above written, agrees
           and consents to the joint filing on its behalf of this Schedule 13G
           in connection with its beneficial ownership of the security reported
           herein.

                                   ARTISAN INVESTMENT CORPORATION (for
                                   itself and as general partner of
                                   ARTISAN PARTNERS LIMITED PARTNERSHIP)
                                   
                                   By:  /s/ Andrew A. Ziegler
                                       ----------------------
                                       Andrew A. Ziegler
                                   
           The undersigned individuals, on the date above written, agree
           and consent to the joint filing on their behalf of this Schedule 13G
           in connection with their beneficial ownership of the security
           reported herein.


                                   ANDREW A. ZIEGLER
                                   
                                   /s/ Andrew A. Ziegler
                                   ---------------------
                                   
                                   
                                   
                                   CARLENE MURPHY ZIEGLER
                                   
                                   
                                   
                                   
                                   /s/ Carlene Murphy Ziegler
                                   --------------------------
                                   
                              Page 9 of 9 pages



© 2022 IncJournal is not affiliated with or endorsed by the U.S. Securities and Exchange Commission