ICO INC
SC 13D/A, 1996-05-14
OIL & GAS FIELD SERVICES, NEC
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<PAGE>   1





                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                               _______________

                                  SCHEDULE 13D
                                AMENDMENT NO. 15

                   Under the Securities Exchange Act of 1934



                                   ICO, Inc.
- --------------------------------------------------------------------------------
                                (NAME OF ISSUER)



                      Common Stock, No par value per share
- --------------------------------------------------------------------------------
                         (TITLE OF CLASS OF SECURITIES)


                                   449294206
- --------------------------------------------------------------------------------
                                 (CUSIP NUMBER)


                             Gary P. Kreider, Esq.
                          Keating, Muething & Klekamp
                       One East Fourth Street, 18th Floor
                             Cincinnati, Ohio 45202
                                 (513) 579-6411
- --------------------------------------------------------------------------------
                 (NAME, ADDRESS AND TELEPHONE NUMBER OF PERSON
               AUTHORIZED TO RECEIVE NOTICES AND COMMUNICATIONS)

                                 April 30, 1996
- --------------------------------------------------------------------------------
            (DATE OF EVENT WHICH REQUIRES FILING OF THIS STATEMENT)


    If the filing person has previously filed a statement on Schedule 13G to
    report the acquisition which is the subject of this Schedule 13D, and is
    filing this schedule because of Rule 13d-1(b)(3) or (4), check the
    following box /  /.

    Check the following box if a fee is being paid with this statement /  /.


<PAGE>   2



 CUSIP NO. 449294206                  13D                    Page 2 of 27 Pages

<TABLE>
<S>                                                                                                                 <C>   <C>
1   NAME OF REPORTING PERSONS
    S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS

    Dr. Asher O. Pacholder


2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                                                               (a)   / X /
                                                                                                                    (b)   /   /


3   SEC USE ONLY


4   SOURCE OF FUNDS*

    See Item 3


5   CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
    TO ITEM 2(d) or 2(e)                                                                                                  /   /


6   CITIZENSHIP OR PLACE OF ORGANIZATION

    United States citizen


                   7   SOLE VOTING POWER

  NUMBER OF            0 (See Items 5 & 6)
    SHARES
 BENEFICIALLY      8   SHARED VOTING POWER                           
   OWNED BY                                                           
     EACH              7,812,088 (See Items 1, 5 & 6)                
  REPORTING                                                           
 PERSON WITH                                                          
                   9   SOLE DISPOSITIVE POWER                        
                                                                      
                       77,400 (See Item 5)                           
                                                                      
                                                                      
                  10  SHARED DISPOSITIVE POWER                      
                                                                      
                      1,317,562 (See Item 5)                        

11  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

    7,812,088 (See Items 1, 5 & 6)


12  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES                                                                /   /
    CERTAIN SHARES*


13  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

    39.9% (See Items 1, 5 & 6)


14  TYPE OF REPORTING PERSON*
    IN
</TABLE>


                     *SEE INSTRUCTIONS BEFORE FILLING OUT!

<PAGE>   3



<TABLE>
<CAPTION>

 CUSIP NO. 449294206                           13D                                           Page  3  of  27  Pages

<S>                                                                                                                 <C>   <C>
1   NAME OF REPORTING PERSONS
    S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS

    Sylvia A. Pacholder


2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                                                               (a)  / X /
                                                                                                                    (b)  /   /


3   SEC USE ONLY


4   SOURCE OF FUNDS*

    See Item 3


5   CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT                                                    /    /
    TO ITEM 2(d) or 2(e)


6   CITIZENSHIP OR PLACE OF ORGANIZATION

    United States citizen


                   7   SOLE VOTING POWER

  NUMBER OF            0 (See Items 5 & 6)
    SHARES
 BENEFICIALLY      8   SHARED VOTING POWER                 
   OWNED BY                                                
     EACH              7,812,088 (See Items 1, 5 & 6)      
  REPORTING                                                
 PERSON WITH                                               
                   9   SOLE DISPOSITIVE POWER              
                                                           
                       87,000 (See Item 5)                 
                                                           
                                                           
                   10  SHARED DISPOSITIVE POWER            
                                                           
                       1,317,562 (See Item 5)              
               
11  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

    7,812,088 (See Items 1, 5 & 6)


12  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES                                                               /   /
    CERTAIN SHARES*


13  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

    39.9% (See Items 1, 5 & 6)


14  TYPE OF REPORTING PERSON*
    IN
</TABLE>


                     *SEE INSTRUCTIONS BEFORE FILLING OUT!

<PAGE>   4



 CUSIP NO. 449294206                13D                      Page 4 of 27 Pages

<TABLE>
<S>                                                                                                                 <C>   <C>
1   NAME OF REPORTING PERSONS
    S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS

    Robin E. Pacholder


2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                                                               (a)  / X /
                                                                                                                    (b)  /   /


3   SEC USE ONLY


4   SOURCE OF FUNDS*

    See Item 3


5   CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT                                                    /   /
    TO ITEM 2(d) or 2(e)


6   CITIZENSHIP OR PLACE OF ORGANIZATION

    United States citizen


                   7   SOLE VOTING POWER

  NUMBER OF            0 (See Items 5 & 6)
    SHARES
 BENEFICIALLY      8   SHARED VOTING POWER                  
   OWNED BY                                                 
     EACH              7,812,088 (See Items 1, 5 and 6)     
  REPORTING                                                 
 PERSON WITH                                                
                   9   SOLE DISPOSITIVE POWER               
                                                            
                       6,822 (See Item 5)                   
                                                            
                                                            
                   10  SHARED DISPOSITIVE POWER             
                                                            
                       0                                    
               
11  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

    7,812,088 (See Items 1, 5 & 6)


12  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES                                                               /   /
    CERTAIN SHARES*


13  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

    39.9% (See Items 1, 5 & 6)


14  TYPE OF REPORTING PERSON*
    IN
</TABLE>


                     *SEE INSTRUCTIONS BEFORE FILLING OUT!

<PAGE>   5


CUSIP NO. 449294206                    13D                    Page 5 of 27 Pages

<TABLE>
<S>                                                                                                                 <C>   <C>
1   NAME OF REPORTING PERSONS
    S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS

    William J. Morgan


2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                                                               (a)   / X /
                                                                                                                    (b)   /   /


3   SEC USE ONLY


4   SOURCE OF FUNDS*

    See Item 3


5   CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT                                                     /   /
    TO ITEM 2(d) or 2(e)


6   CITIZENSHIP OR PLACE OF ORGANIZATION

    United States citizen


                    7   SOLE VOTING POWER

  NUMBER OF               0 (See Items 5 & 6)
    SHARES
 BENEFICIALLY       8   SHARED VOTING POWER                   
   OWNED BY                                                   
     EACH               7,812,088 (See Items 1, 5 & 6)        
  REPORTING                                                   
 PERSON WITH                                                  
                    9   SOLE DISPOSITIVE POWER                
                                                              
                        10,000 (See Item 5)                   
                                                              
                                                              
                    10  SHARED DISPOSITIVE POWER              
                                                              
                        1,317,562 (See Item 5)                
               

11  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

    7,812,088 (See Items 1, 5 & 6)


12  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES                                                                /   /
    CERTAIN SHARES*


13  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

    39.9% (See Items 1, 5 & 6)


14  TYPE OF REPORTING PERSON*
    IN
</TABLE>


                     *SEE INSTRUCTIONS BEFORE FILLING OUT!

<PAGE>   6



CUSIP NO. 449294206                   13D                     Page 6 of 27 Pages

<TABLE>
<S>                                                                                                                 <C>   <C>
1   NAME OF REPORTING PERSONS
    S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS

    Pacholder Associates, Inc., Tax I.D. #31-1089398


2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                                                               (a) /  X /
                                                                                                                    (b) /   /


3   SEC USE ONLY


4   SOURCE OF FUNDS*

    See Item 3


5   CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT                                                  /   /
    TO ITEM 2(d) or 2(e)


6   CITIZENSHIP OR PLACE OF ORGANIZATION

    Ohio corporation


                    7   SOLE VOTING POWER

  NUMBER OF              0 (See Items 5 & 6)
    SHARES
 BENEFICIALLY       8   SHARED VOTING POWER              
   OWNED BY                                              
     EACH               7,812,088 (See Items 1, 5 & 6)   
  REPORTING                                              
 PERSON WITH                                             
                    9   SOLE DISPOSITIVE POWER           
                                                         
                        0 (See Item 5)                   
                                                         
                                                         
                    10  SHARED DISPOSITIVE POWER         
                                                         
                        923,325 (See Item 5)             


11  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

    7,812,088 (See Items 1, 5 & 6)


12  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES                                                             /   /
    CERTAIN SHARES*


13  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

    39.9% (See Items 1, 5 & 6)


14  TYPE OF REPORTING PERSON*
    IA
</TABLE>


                     *SEE INSTRUCTIONS BEFORE FILLING OUT!

<PAGE>   7



CUSIP NO. 449294206                     13D                   Page 7 of 27 Pages

<TABLE>
<S>                                                                                                                 <C>   <C>
1   NAME OF REPORTING PERSONS
    S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS

    P M Delaware 


2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                                                               (a)   / X /
                                                                                                                    (b)   /   /


3   SEC USE ONLY


4   SOURCE OF FUNDS*

    See Item 3


5   CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT                                                     /   /
    TO ITEM 2(d) or 2(e)


6   CITIZENSHIP OR PLACE OF ORGANIZATION

    Delaware


                    7   SOLE VOTING POWER

  NUMBER OF               0 (See Items 5 & 6)
    SHARES
 BENEFICIALLY       8   SHARED VOTING POWER                  
   OWNED BY                                                  
     EACH               7,812,088 (See Items 1, 5 & 6)       
  REPORTING                                                  
 PERSON WITH                                                 
                    9   SOLE DISPOSITIVE POWER               
                                                             
                        0 (See Item 5)                       
                                                             
                                                             
                    10  SHARED DISPOSITIVE POWER             
                                                             
                        394,237 (See Item 5)                 
               

11  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

    7,812,088 (See Items 1, 5 & 6)


12  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES                                                                /   /
    CERTAIN SHARES*


13  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

    39.9% (See Items 1, 5 & 6)


14  TYPE OF REPORTING PERSON*
    CO
</TABLE>


                     *SEE INSTRUCTIONS BEFORE FILLING OUT!

<PAGE>   8



CUSIP NO. 449294206                    13D                    Page 8 of 27 Pages

<TABLE>
<S>                                                                                                                 <C>   <C>
1   NAME OF REPORTING PERSONS
    S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS

    William E. Willoughby


2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                                                               (a)  / X /
                                                                                                                    (b)  /   /


3   SEC USE ONLY


4   SOURCE OF FUNDS*

    See Item 3


5   CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT                                                    /   /
    TO ITEM 2(d) or 2(e)


6   CITIZENSHIP OR PLACE OF ORGANIZATION

    United States citizen


                    7   SOLE VOTING POWER

  NUMBER OF               0 (See Items 5 & 6)
    SHARES
 BENEFICIALLY       8   SHARED VOTING POWER                 
   OWNED BY                                                 
     EACH               7,812,088 (See Items 1, 5 & 6)      
  REPORTING                                                 
 PERSON WITH                                                
                    9   SOLE DISPOSITIVE POWER              
                                                            
                        1,624,173 (See Items 1 & 5)         
                                                            
                                                            
                    10  SHARED DISPOSITIVE POWER            
                                                            
                        149,139 (See Items 1 & 5)           
               

11  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

    7,812,088 (See Items 1, 5 & 6)


12  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES                                                               /   /
    CERTAIN SHARES*


13  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

    39.9% (See Items 1, 5 & 6)


14  TYPE OF REPORTING PERSON*
    IN
</TABLE>


                     *SEE INSTRUCTIONS BEFORE FILLING OUT!

<PAGE>   9



CUSIP NO. 449294206                    13D                    Page 9 of 27 Pages

<TABLE>
<S>                                                                                                                 <C>   <C>
1   NAME OF REPORTING PERSONS
    S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS

    Peggy S. Willoughby


2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                                                               (a)  / X /
                                                                                                                    (b)  /   /


3   SEC USE ONLY


4   SOURCE OF FUNDS*

    See Item 3


5   CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT                                                    /   /
    TO ITEM 2(d) or 2(e)


6   CITIZENSHIP OR PLACE OF ORGANIZATION

    United States citizen


                     7   SOLE VOTING POWER

  NUMBER OF                0 (See Items 5 & 6)
    SHARES
 BENEFICIALLY        8   SHARED VOTING POWER                
   OWNED BY                                                 
     EACH                7,812,088 (See Items 1, 5 & 6)     
  REPORTING                                                 
 PERSON WITH                                                
                     9   SOLE DISPOSITIVE POWER             
                                                            
                         708,446 (See Items 1 & 5)          
                                                            
                                                            
                     10  SHARED DISPOSITIVE POWER           
                                                            
                         149,139 (See Items 1 & 5)          
               

11  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

    7,812,088 (See Items 1, 5 & 6)


12  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES                                                               /   /
    CERTAIN SHARES*


13  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

    39.9% (See Items 1, 5 & 6)


14  TYPE OF REPORTING PERSON*
    IN
</TABLE>


                     *SEE INSTRUCTIONS BEFORE FILLING OUT!

<PAGE>   10



CUSIP NO. 449294206                     13D                  Page 10 of 27 Pages

<TABLE>
<S>                                                                                                                 <C>   <C>
1   NAME OF REPORTING PERSONS
    S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS

    William C. Willoughby


2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                                                               (a)  / X /
                                                                                                                    (b)  /   /
                                                            

3   SEC USE ONLY


4   SOURCE OF FUNDS*

    See Item 3


5   CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT                                                    /    /
    TO ITEM 2(d) or 2(e)


6   CITIZENSHIP OR PLACE OF ORGANIZATION

    United States citizen


                     7   SOLE VOTING POWER
                         3,280 (See Items 1,  5 & 6)
  NUMBER OF
    SHARES           8   SHARED VOTING POWER                
 BENEFICIALLY                                               
   OWNED BY              7,812,088 (See Items 1, 5 & 6)     
     EACH                                                   
  REPORTING                                                 
 PERSON WITH         9   SOLE DISPOSITIVE POWER             
                         1,384,851 (See Items 1 & 5)        
                                                            
                                                            
                     10  SHARED DISPOSITIVE POWER           
                                                            
                         0                                  
               

11  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
    7,812,088 (See Items 1, 5 & 6)


12  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES                                                               /   /
    CERTAIN SHARES*


13  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

    39.9% (See Items 1, 5 & 6)


14  TYPE OF REPORTING PERSON*
    IN
</TABLE>


                     *SEE INSTRUCTIONS BEFORE FILLING OUT!

<PAGE>   11



CUSIP NO. 449294206                     13D                  Page 11 of 27 Pages

<TABLE>
<S>                                                                                                                 <C>   <C>
1   NAME OF REPORTING PERSONS
    S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS

    Regina S. Willoughby


2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                                                               (a)  / X /
                                                                                                                    (b) /   /


3   SEC USE ONLY


4   SOURCE OF FUNDS*

    See Item 3


5   CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT                                                   /   /
    TO ITEM 2(d) or 2(e)


6   CITIZENSHIP OR PLACE OF ORGANIZATION

    United States citizen


                    7   SOLE VOTING POWER
                        3,280 (See Items 1, 5 & 6)
  NUMBER OF
    SHARES          8   SHARED VOTING POWER                  
 BENEFICIALLY                                                
   OWNED BY             7,812,088 (See Items 1, 5 and 6)     
     EACH                                                    
  REPORTING                                                  
 PERSON WITH        9   SOLE DISPOSITIVE POWER               
                        140,863 (See Items 1 & 5)            
                                                             
                                                             
                    10  SHARED DISPOSITIVE POWER             
                                                             
                        0                                    
               
               
11  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
    7,812,088 (See Items 1, 5 & 6)


12  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES                                                              /   /
    CERTAIN SHARES*


13  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

    39.9% (See Items 1, 5 & 6)


14  TYPE OF REPORTING PERSON*
    IN
</TABLE>


                     *SEE INSTRUCTIONS BEFORE FILLING OUT!

<PAGE>   12



CUSIP NO. 449294206                     13D                  Page 12 of 27 Pages

<TABLE>
<S>                                                                                                                 <C>   <C>
1   NAME OF REPORTING PERSONS
    S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS

    Fred R. Feder


2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                                                               (a)  / X /
                                                                                                                    (b) /   /


3   SEC USE ONLY


4   SOURCE OF FUNDS*

    See Item 3


5   CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT                                                   /   /
    TO ITEM 2(d) or 2(e)


6   CITIZENSHIP OR PLACE OF ORGANIZATION

    Citizen of Germany


                    7   SOLE VOTING POWER

  NUMBER OF               0 (See Items 5 & 6)
    SHARES
 BENEFICIALLY       8   SHARED VOTING POWER              
   OWNED BY                                              
     EACH               7,812,088 (See Items 1, 5 & 6)   
  REPORTING                                              
 PERSON WITH                                             
                    9   SOLE DISPOSITIVE POWER           
                                                         
                        979,260 (See Items 1 & 5)        
                                                         
                                                         
                    10  SHARED DISPOSITIVE POWER         
                                                         
                        0                                
               

11  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

    7,812,088 (See Items 1, 5 & 6)


12  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES                                                              /   /
    CERTAIN SHARES*


13  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

    39.9% (See Items 1, 5 & 6)


14  TYPE OF REPORTING PERSON*
    IN
</TABLE>


                     *SEE INSTRUCTIONS BEFORE FILLING OUT!

<PAGE>   13



CUSIP NO. 449294206                     13D                  Page 13 of 27 Pages

<TABLE>
<S>                                                                                                                 <C>   <C>
1   NAME OF REPORTING PERSONS
    S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS

    Theo J.M.L. Verhoeff


2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                                                               (a)  / X /
                                                                                                                    (b)  /   /
                                                            

3   SEC USE ONLY


4   SOURCE OF FUNDS*

    See Item 3


5   CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT                                                    /    /
    TO ITEM 2(d) or 2(e)


6   CITIZENSHIP OR PLACE OF ORGANIZATION

    Citizen of the Netherlands


                    7   SOLE VOTING POWER

  NUMBER OF               0 (See Items 5 & 6)
    SHARES
 BENEFICIALLY       8   SHARED VOTING POWER                
   OWNED BY                                                
     EACH               7,812,088 (See Items 1, 5 & 6)     
  REPORTING                                                
 PERSON WITH                                               
                    9   SOLE DISPOSITIVE POWER             
                                                           
                        81,709 (See Items 1 & 5)           
                                                           
                                                           
                    10  SHARED DISPOSITIVE POWER           
                                                           
                        0


11  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

    7,812,088 (See Items 1, 5 & 6)


12  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES                                                               /    /
    CERTAIN SHARES*


13  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

    39.9% (See Items 1, 5 & 6)


14  TYPE OF REPORTING PERSON*
    IN
</TABLE>


                     *SEE INSTRUCTIONS BEFORE FILLING OUT!

<PAGE>   14



CUSIP NO. 449294206                     13D                  Page 14 of 27 Pages

<TABLE>
<S>                                                                                                                 <C>   <C>
1   NAME OF REPORTING PERSONS
    S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS

    Catherine Willoughby Stephens


2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                                                               (a)  / X /
                                                                                                                    (b)  /   /
                                                            

3   SEC USE ONLY


4   SOURCE OF FUNDS*

    See Item 3


5   CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT                                                    /   /
    TO ITEM 2(d) or 2(e)


6   CITIZENSHIP OR PLACE OF ORGANIZATION

    United States citizen


                      7   SOLE VOTING POWER

  NUMBER OF                0 (See Items 5 & 6)
    SHARES
 BENEFICIALLY          8   SHARED VOTING POWER                
   OWNED BY                                                   
     EACH                  7,812,088 (See Items 1, 5 & 6)     
  REPORTING                                                   
 PERSON WITH                                                  
                       9   SOLE DISPOSITIVE POWER             
                                                              
                           456,984 (See Item 1 & 5)           
                                                              
                                                              
                       10  SHARED DISPOSITIVE POWER           
                                                              
                           0                                  


11  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

    7,812,088 (See Items 1, 5 & 6)


12  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES                                                               /   /
    CERTAIN SHARES*


13  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

    39.9% (See Items 1, 5 & 6)


14  TYPE OF REPORTING PERSON*
    IN
</TABLE>


                     *SEE INSTRUCTIONS BEFORE FILLING OUT!

<PAGE>   15



CUSIP NO. 449294206                    13D                   Page 15 of 27 Pages

<TABLE>
<S>                                                                                                                 <C>   <C>
1   NAME OF REPORTING PERSONS
    S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS

    Walter L. Leib


2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                                                               (a)  / X /
                                                                                                                    (b)  /   /


3   SEC USE ONLY


4   SOURCE OF FUNDS*

    See Item 3


5   CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT                                                    /   /
    TO ITEM 2(d) or 2(e)


6   CITIZENSHIP OR PLACE OF ORGANIZATION

    United States citizen


                      7   SOLE VOTING POWER

  NUMBER OF               33,921 (See Items 1 & 5)
    SHARES
 BENEFICIALLY         8   SHARED VOTING POWER                     
   OWNED BY                                                       
     EACH                 2,293,222 (See Items 1, 5 and 6)        
  REPORTING                                                       
 PERSON WITH                                                      
                      9   SOLE DISPOSITIVE POWER                  
                                                                  
                          33,921 (See Items 1 & 5)                
                                                                  
                                                                  
                      10  SHARED DISPOSITIVE POWER                
                                                                  
                          0                                       


11  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

    2,327,143 (See Items 1, 5 & 6)


12  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES                                                               /   /
    CERTAIN SHARES*


13  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

    11.9% (See Items 1, 5 & 6)


14  TYPE OF REPORTING PERSON*
    IN
</TABLE>


                     *SEE INSTRUCTIONS BEFORE FILLING OUT!

<PAGE>   16



CUSIP NO. 449294206                     13D                  Page 16 of 27 Pages

<TABLE>
<S>                                                                                                                 <C>   <C>
1   NAME OF REPORTING PERSONS
    S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS

    Edward N. Barol


2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                                                               (a)  /   /
                                                                                                                    (b)  / X /


3   SEC USE ONLY


4   SOURCE OF FUNDS*

    See Item 3

                                                                                                                         
5   CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT                                                    /    /
    TO ITEM 2(d) or 2(e)


6   CITIZENSHIP OR PLACE OF ORGANIZATION

    United States citizen


                     7   SOLE VOTING POWER

  NUMBER OF              16,401 (See Items 1 & 5)
    SHARES
 BENEFICIALLY        8   SHARED VOTING POWER               
   OWNED BY                                                
     EACH                2,293,222 (See Items 1, 5 & 6)    
  REPORTING                                                
 PERSON WITH                                               
                     9   SOLE DISPOSITIVE POWER            
                                                           
                         16,401 (See Items 1 & 5)          
                                                           
                                                           
                     10  SHARED DISPOSITIVE POWER          
                                                           
                         0                                 
               

11  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

    2,309,623 (See Items 1, 5 & 6)


12  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES                                                               /   /
    CERTAIN SHARES*


13  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

    11.8% (See Items 1, 5 & 6)


14  TYPE OF REPORTING PERSON*
    IN
</TABLE>


                     *SEE INSTRUCTIONS BEFORE FILLING OUT!

<PAGE>   17



ITEM 1.   SECURITY AND ISSUER.

          This Amendment No. 15 relates to the common stock, no par value per
share ("ICO Common Stock") of ICO, Inc. ("ICO"), 100 Glenborough Drive, Houston,
Texas  77067.  This filing amends the Schedule 13D filed by Pacholder Associates
Inc. by adding and though this initial filing for such holders of ICO Common
Stock who have become members of a group through execution of the Shareholders
Agreement described in Item 6 and to reflect the acquisition of shares of ICO
common stock, no par value (the "ICO Common Stock") pursuant to the merger of
Wedco Technology, Inc. ("Wedco") with and into W Acquisition Corp. ("W Acquisi
tion"), a wholly-owned subsidiary of ICO.  Pursuant to the merger, W Acquisition
changed its name to Wedco Technology, Inc.  This filing assumes that all Wedco
Shareholders (as defined in Item 2) will elect the Stock Consideration (as
defined in Item 3) provided for by such merger.  A further amendment shall be
made to reflect the effects of such elections to the extent inconsistent with
this assumption. 

ITEM 2    IDENTITY AND BACKGROUND.  (*INDICATES MEMBER OF GROUP BUT NOT A
          FILING PERSON)

          DR. ASHER O. PACHOLDER

          (a) - (c) Dr. Asher O. Pacholder ("AOP") is the Chairman of the Board
                    of Directors and Chief Operating Officer of Wedco
                    Technology, Inc. ("Wedco"),  Route 173, West Portal, New
                    Jersey  08802, and Chairman of the Board of Directors and
                    Chief Financial Officer of ICO, 100 Glenborough Drive,
                    Houston, Texas 77067.

          (d)       AOP during the last five (5) years, has not been con victed
                    in a criminal proceeding (excluding traffic violations or
                    similar misdemeanors).

          (e)       AOP during the last five (5) years, has not been a party to
                    a civil proceeding of a judicial or administrative body of
                    competent jurisdiction which resulted in AOP being at any
                    time subject to a judgment, decree or final order enjoining
                    future violations of, or prohibiting or mandating
                    activities subject to, federal or state securities laws or
                    finding any violation with respect to such laws.

          (f)       United States citizen.


          
          
                                     -17-
<PAGE>   18
          SYLVIA A. PACHOLDER

          (a) - (c) Sylvia A. Pacholder ("SAP") is President, Chief Executive
                    Officer and Director of Wedco, Route 173, West Portal, New
                    Jersey  08802, and President, Chief Executive Officer,
                    Secretary and Director of ICO, 100 Glenborough Drive,
                    Houston, Texas 77067.

          (d)       SAP during the last five (5) years, has not been con victed
                    in a criminal proceeding (excluding traffic violations or
                    similar misdemeanors).

          (e)       SAP during the last five (5) years, has not been a party to
                    a civil proceeding of a judicial or administrative body of
                    competent jurisdiction which resulted in SAP being at any
                    time subject to a judgment, decree or final order enjoining
                    future violations of, or prohibiting or mandating
                    activities subject to, federal or state securities laws or
                    finding any violation with respect to such laws.

          (f)       United States citizen.


          
          ROBIN E. PACHOLDER

          (a) - (c) Robin E. Pacholder ("REP") is Senior Vice President and
                    Associate General Counsel of Pacholder Associates, Inc.,
                    8044 Montgomery Road, Suite 382, Cincinnati, Ohio 45202,
                    and a Director of ICO, 100 Glenborough Drive, Houston,
                    Texas 77067.

          (d)       REP during the last five (5) years, has not been convicted
                    in a criminal proceeding (excluding traffic violations or
                    similar misdemeanors).

          (e)       REP during the last five (5) years, has not been a party to
                    a civil proceeding of a judicial or administrative body of
                    competent jurisdiction which resulted in REP being at any
                    time subject to a judgment, decree or final order enjoining
                    future violations of, or prohibiting or mandating
                    activities subject to, federal or state securities laws or
                    finding any violation with respect to such laws.

          (f)       United States citizen.


          




                                     -18-

<PAGE>   19
          WILLIAM J. MORGAN

          (a) - (c) William J. Morgan ("Morgan") is President and Managing
                    Director of Pacholder Associates, Inc., 8044 Montgomery
                    Road, Suite 382, Cincinnati, Ohio 45202, and a Director of
                    ICO, 100 Glenborough Drive, Houston, Texas 77067.

          (d)       Morgan during the last five (5) years, has not been
                    convicted in a criminal proceeding (excluding traffic
                    violations or similar misdemeanors).

          (e)       Morgan during the last five (5) years, has not been a party
                    to a civil proceeding of a judicial or administrative 
                    body of competent jurisdiction which resulted in
                    Morgan being at any time subject to a judgment, decree or
                    final order enjoining future violations of, or prohibit ing
                    or mandating activities subject to, federal or state
                    securities laws or finding any violation with respect to
                    such laws.

          (f)       United States citizen.
          

          PACHOLDER ASSOCIATES, INC.

          (a) - (c) Pacholder Associates, Inc.("Pacholder Associates") is an
                    Ohio corporation.  Pacholder Associates' business address
                    and the address of its principal office is 8044 Montgomery
                    Road, Suite 382, Cincinnati, Ohio  45202.

          (d)       Pacholder Associates during the last five (5) years, has
                    not been convicted in a criminal proceeding (excluding
                    traffic violations or similar misdemeanors).

          (e)       Pacholder Associates during the last five (5) years, has
                    not been a party to a civil proceeding of a judicial or
                    administrative body of competent jurisdiction which
                    resulted in Pacholder Associates being at any time subject
                    to a judgment, decree or final order enjoining future
                    violations of, or prohibiting or mandating activities
                    subject to, federal or state securities laws or finding any
                    violation with respect to such laws.

          (f)       Not applicable.


          


                                     -19-
<PAGE>   20
          P M DELAWARE, INC.

          (a) - (c) P M Delaware, Inc. ("P M Delaware") is a Delaware
                    corporation.  P M Delaware's business address and the
                    address of its principal office is 1105 North Market
                    Street, Suite 1300, P.O. Box 8985, Wilmington, DE 19899.

          (d)       P M Delaware during the last five (5) years, has not been
                    convicted in a criminal proceeding (excluding traffic
                    violations or similar misdemeanors).

          (e)       P M Delaware during the last five (5) years, has not been a
                    party to a civil proceeding of a judicial or adminis-
                    trative body of competent jurisdiction which resulted in P
                    M Delaware being at any time subject to a judgment, decree
                    or final order enjoining future violations of, or
                    prohibiting or mandating activities subject to, federal or
                    state securities laws or finding any violation with respect
                    to such laws.

          (f)       Not applicable.


          WILLIAM E. WILLOUGHBY

          (a) - (c) William E. Willoughby ("WEW") is a consultant for Wedco,
                    Route 173, West Portal, New Jersey  08802, and a Director
                    of ICO, 100 Glenborough Drive, Houston, Texas 77067.

          (d)       WEW during the last five (5) years, has not been convicted
                    in a criminal proceeding (excluding traffic violations or
                    similar misdemeanors).

          (e)       WEW during the last five (5) years, has not been a party to
                    a civil proceeding of a judicial or administrative body of
                    competent jurisdiction which resulted in WEW being at any
                    time subject to a judgment, decree or final order enjoining
                    future violations of, or prohibiting or mandating activities
                    subject to, federal or state securities laws or finding any
                    violation with respect to such laws.

          (f)       United States citizen.


          PEGGY S. WILLOUGHBY

          (a) - (c) Peggy S. Willoughby ("PSW") is the wife of WEW and resides
                    at
                                                                               .

          (d)       PSW during the last five (5) years, has not been convicted
                    in a criminal proceeding (excluding traffic violations or
                    similar misdemeanors).

          (e)       PSW during the last five (5) years, has not been a party to
                    a civil proceeding of a judicial or administrative body of
                    competent jurisdiction which resulted in PSW being at any
                    time subject to a judgment, decree or final order enjoining
                    future violations of, or prohibiting or mandating
                    activities subject to, federal or state securities laws or
                    finding any violation with respect to such laws.

                        (f)       United States citizen.


          WILLIAM C. WILLOUGHBY

          (a) - (c) William C. Willoughby ("WCW") is the son of WEW.  He is 
                    __________________________________ for __________________ ,
                    ______________________.

          (d)       WCW during the last five (5) years, has not been convicted
                    in a criminal proceeding (excluding traffic violations or
                    similar misdemeanors).

          (e)       WCW during the last five (5) years, has not been a party to
                    a civil proceeding of a judicial or administrative body of
                    competent jurisdiction which resulted in WCW being at any
                    time subject to a judgment, decree or final order enjoining
                    future violations of, or prohibiting or mandating 
                    activities subject to, federal or state securities laws 
                    or finding any violation with respect to such laws.

          (f)       United States citizen.


                                     -20-
<PAGE>   21

          REGINA S. WILLOUGHBY

          (a) - (c) Regina S. Willoughby ("RSW") is______________________ for
                    ______________________________.

          (d)       RSW during the last five (5) years, has not been convicted
                    in a criminal proceeding (excluding traffic violations or
                    similar misdemeanors).

          (e)       RSW during the last five (5) years, has not been a party to
                    a civil proceeding of a judicial or administrative body of
                    competent jurisdiction which resulted in RSW being at any
                    time subject to a judgment, decree or final order enjoining
                    future violations of, or prohibiting or mandating
                    activities subject to, federal or state securities laws or
                    finding any violation with respect to such laws.

          (f)       United States citizen.


          FRED R. FEDER

          (a) - (c) Fred R. Feder ("Feder") is the Vice President of Wedco,
                    Route 173, West Portal, New Jersey  08802.

          (d)       Feder during the last five (5) years, has not been
                    convicted in a criminal proceeding (excluding traffic
                    violations or similar misdemeanors).

          (e)       Feder during the last five (5) years, has not been a party
                    to a civil proceeding of a judicial or administrative 
                    body of competent jurisdiction which resulted in Feder 
                    being at any time subject to a judgment, decree or
                    final order enjoining future violations of, or prohibit ing
                    or mandating activities subject to, federal or state
                    securities laws or finding any violation with respect to
                    such laws.

          (f)       Germany.


          THEO J.M.L. VERHOEFF

          (a) - (c) Theo J.M.L. Verhoeff ("Verhoeff") is the Vice President-
                    European Operations for Wedco, Route 173, West Portal, New
                    Jersey  08802.

          (d)       Verhoeff during the last five (5) years, has not been
                    convicted in a criminal proceeding (excluding traffic
                    violations or similar misdemeanors).




                                     -21-
<PAGE>   22
          (e)       Verhoeff during the last five (5) years, has not been a
                    party to a civil proceeding of a judicial or adminis-
                    trative body of competent jurisdiction which resulted in
                    Verhoeff being at any time subject to a judgment, decree or
                    final order enjoining future violations of, or prohibiting
                    or mandating activities subject to, federal or state
                    securities laws or finding any violation with respect to
                    such laws.

          (f)       Citizen of The Netherlands.


          CATHERINE WILLOUGHBY STEPHENS

          (a) - (c) Catherine Willoughby Stephens ("Stephens") is the daughter
                    of WEW.  She is Vice President for Stephens Realty, Inc.,
                    120 Hana Highway, P.O. Box 50, Paia, Hawaii 96799.

          (d)       Stephens during the last five (5) years, has not been
                    convicted in a criminal proceeding (excluding traffic
                    violations or similar misdemeanors).

          (e)       Stephens during the last five (5) years, has not been a
                    party to a civil proceeding of a judicial or adminis-
                    trative body of competent jurisdiction which resulted in
                    Stephens being at any time subject to a judgment, decree or
                    final order enjoining future violations of, or prohibiting
                    or mandating activities subject to, federal or state
                    securities laws or finding any violation with respect to
                    such laws.

          (f)       United States citizen.


          WALTER L. LEIB

          (a) - (c) Walter L. Leib ("Leib") is a shareholder of the law firm of
                    Leib, Kraus, Grispin & Roth, a professional corporation,
                    328 Park Avenue, P.O. Box 310, Scotch Plains, New Jersey
                    07076-0310.

          (d)       Leib during the last five (5) years, has not been convicted
                    in a criminal proceeding (excluding traffic violations or
                    similar misdemeanors).

          (e)       Leib during the last five (5) years, has not been a party
                    to a civil proceeding of a judicial or administrative body
                    of competent jurisdiction which resulted in Leib being at
                    any time subject to a judgment, decree or final order
                    enjoining future violations of, or prohibiting or mandating
                    activities subject to, federal or state securities laws or
                    finding any violation with respect to such laws.

          (f)       United States citizen.


                                      -22-
<PAGE>   23
          EDWARD N. BAROL

          (a) - (c) Edward N. Barol ("Barol") is of counsel to the law firm of
                    Dilworth, Paxson, Kalish & Kaufman LLP, 3200 Mellon Bank
                    Center, 1735 Market Street, Philadelphia, Pennsylvania
                    19103-7595.

          (d)       Barol during the last five (5) years, has not been
                    convicted in a criminal proceeding (excluding traffic
                    violations or similar misdemeanors).

          (e)       Barol during the last five (5) years, has not been a party
                    to a civil proceeding of a judicial or administrative body
                    of competent jurisdiction which resulted in Barol being at
                    any time subject to a judgment, decree or final order
                    enjoining future violations of, or prohibiting or mandating
                    activities subject to, federal or state securities laws or
                    finding any violation with respect to such laws.

          (f)       United States citizen.




As used hereafter, WEW, PSW, WCW, RSW, Feder, Verhoeff and Stephens are
collectively referred to as the "Wedco Shareholders," and AOP, SAP, REP,
Morgan, Pacholder Associates and P M Delaware are collectively referred to as
the "ICO Shareholders."  The Wedco Shareholders and the ICO Shareholders are
collectively referred to as the "Shareholders".

ITEM 3.   SOURCE AND AMOUNT OF FUNDS.

          The Wedco Shareholders' Common Stock was acquired pursuant to a
statutory merger between Wedco and W Acquisition Corp. ("W Acquisition"), a
wholly-owned subsidiary of ICO, whereby shares of Wedco Common Stock, $0.10 par
value ("Wedco Common Stock") were converted into the right to receive, at the
option of the holder thereof, either:  (i) 2.20 shares ICO Common Stock and
$3.50 in cash (the "Cash/Stock Consideration"), or (ii) 2.84 shares of ICO
Common Stock (the "Stock Consideration" and together with the Cash/Stock
Consideration, the "Merger Consideration").  The Wedco Shareholders presently
have not made their election of Merger Consideration.  All of the shareholdings
of the Wedco Shareholders and all percentage calculations for the Shareholders
assume that all the Wedco Shareholders will elect the Stock Consideration.


ITEM 4.   PURPOSE OF TRANSACTION.

          ICO, W Acquisition and Wedco entered into the merger agreement
pursuant to which (i) Wedco was merged with and into W Acquisition with W
Acquisition surviving the Merger as a wholly-owned subsidiary of ICO, and (ii)
each share of Wedco Common Stock being converted into the Merger Consideration
(as defined in Item 3).


                                      -23-
<PAGE>   24
          The Wedco Shareholders intend to monitor the market for ICO Common
Stock and, depending on market conditions, may sell their ICO Common Stock from
time to time.  Except as set forth in the preceding sentence and in Item 6
below, the Shareholders do not have any plans or proposals which relate to or
would result in any of the following events:

          (a)  The acquisition by any person of additional securities of ICO,
or the disposition of securities of ICO;

          (b)  An extraordinary corporate transaction, such as a merger,
reorganization or liquidation, involving ICO or any of its subsidiaries;

          (c)  A sale or transfer of a material amount of assets of ICO or any
of its subsidiaries;

          (d)  Any change in the present board of directors or management of
ICO, including any plans or proposals to change the number or term of directors
or to fill any existing vacancies on the board;

          (e)  Any material change in the present capitalization or dividend
policy of ICO;

          (f)  Any other material change in ICO's business or corporate
structure;

          (g)  Changes in ICO's Certificate of Incorporation or Bylaws or other
actions which may impede the acquisition of control of the issuer by any
person;

          (h)  Causing a class of securities of ICO to be delisted from a
national securities exchange or to cease to be authorized to be quoted on an
inter-dealer quotation system of a registered national securities association;

          (i)  A class of equity securities of ICO becoming eligible for
termination of registration pursuant to Section 12(g)(4) of the Act; or

          (j)  Any action similar to any of those enumerated above.


ITEM 5.   INTEREST IN SECURITIES OF ISSUER.

(a) - (b)

     As of May 10, 1996, the Shareholders in the aggregate beneficially owned
7,813,088 shares (or approximately 39.9% of the outstanding shares) of ICO
Common Stock (based on the assumption that all Wedco Shareholders elect the
Stock Consideration, as defined in Item 3, pursuant to the merger) as follows:

                                      -24-
<PAGE>   25



<TABLE>
<CAPTION>
               HOLDER                                NUMBER OF  SHARES
               ------                                -----------------
<S>                                                         <C>
Dr. Asher O. Pacholder(1)(2)(4)(10)                         1,864,692


Sylvia A. Pacholder(1)(2)(4)(10)                            1,874,292


Robin E. Pacholder(2)(3)(10)                                    6,822


William J. Morgan(2)(4)(10)                                 1,327,562


Pacholder Associates, Inc.(5)(10)                             923,325


P M Delaware, Inc.(10)                                        394,237


William E. Willoughby(6)(10)                                1,773,312


Peggy S. Willoughby(7)(10)                                    857,585


William C. Willoughby(8)(10)                                1,384,851


Regina S. Willoughby(9)(10)                                   140,863


Fred R. Feder(10)                                             979,260


Theo J.M.L. Verhoeff(10)                                       81,709


Catherine Willoughby Stephens(10)                             456,984


Walter L. Leib(10)                                             33,921


Edward N. Barol(10)                                            16,401
<FN>

     (1)  Includes 469,730 shares of Common Stock over which Ms. S. Pacholder
          and Dr. Pacholder share voting power pursuant to irrevocable
          proxies.  Ms. S. Pacholder and Dr. Pacholder disclaim beneficial
          ownership of these shares.
     (2)  Share amounts for Dr. Pacholder, Ms. S. Pacholder, Ms. R. Pacholder
          and Mr. Morgan include 66,000, 87,000, 6,000 and 8,000 shares of
          Common Stock, respectively which may be acquired upon the exercise
          of options.
     (3)  Includes 822 shares of Common Stock issuable upon conversion of
          Convertible Exchangeable Preferred Stock.
     (4)  Includes voting and disposition power of shares beneficially owned
          by Pacholder Associates and P M Delaware.
     (5)  Pacholder Associates has sole voting and disposition authority over
          204,380 shares of ICO Common Stock, 202,079 warrants to acquire ICO 
          Common Stock and 44,760 shares of Convertible Exchangeable
          Preferred Stock, convertible into 122,629 shares of ICO Common
          Stock.  Also includes shares beneficially owned by P M Delaware.
     (6)  Includes 149,139 shares held jointly with his spouse, Peggy S.
          Willoughby.
     (7)  Includes 149,139 shares held jointly with her spouse, William E.
          Willoughby.
</TABLE>

                                      -25-
<PAGE>   26
<TABLE>
   <S>    <C>
    (8)   Includes 45,823 shares held as custodian for William B. Willoughby
          and 3,280 shares held by his minor son, William B. Willoughby.
    (9)   Includes 16,437 shares held as custodian for William B. Willoughby
          and 3,280 shares held by her minor son, William B. Willoughby.
   (10)   Except as specifically set forth in the above notes, does not
          include the shares of the Other Shareholders that can be voted
          pursuant to the voting agreements and irrevocable proxies
          described in Item 6.
</TABLE>


(c)  Except as reported herein, none of the Shareholders has effected any
     transactions in equity securities of ICO during the past sixty days.

(d)  None

(e)  Not Applicable


ITEM 6.   CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS OR RELATIONSHIPS WITH RESPECT
          TO SECURITIES OF THE ISSUER.

          The Shareholders are parties to the following agreements:

     1.   SHAREHOLDERS AGREEMENT.  The Shareholders Agreement ("Shareholders
Agreement") was entered into among ICO, the ICO Shareholders (as defined in
Item 2) and the Wedco Shareholders (as defined in Item 2).  The Shareholders
(as defined in Item 2) agreed to take all actions necessary or appropriate to
cause the election of Willoughby, Leib and George S. Sirusas ("Sirusas") to the
Board of Directors of ICO for terms ending on the date of ICO's annual
shareholders meeting in 1996 in the case of Willoughby, the date of its annual
shareholders meeting in 1997 in the case of Leib and Sirusas and to cause the
reelection of Willoughby, Sirusas and Leib to the Board of Directors of ICO
until the earlier of the time the Wedco Shareholders who are parties to the
Shareholders Agreement, taken as a whole, beneficially own less than 1,500,000
shares of Common Stock of ICO (or as adjusted) or there is a "change in
control" of ICO, when the ICO Shareholders who are parties to the Shareholders
Agreement shall no longer be obligated to cause the reelection of such persons
to its Board of Directors ("Termination Date").  In addition, if Willoughby,
Leib or Sirusas shall cease to serve as a director of ICO at any time prior to
the Termination Date, the Shareholders will agree to take all actions necessary
or appropriate to ensure that the vacancy created shall be filled by a person
nominated by the others, subject to the consent of a majority of the full Board
of Directors of ICO.

     In addition to the foregoing, all the ICO Shareholders who are parties to
the Shareholders Agreement have granted irrevocable proxies coupled with an
interest to Leib and Barol to vote their shares of Common Stock of ICO in favor
of the slate of nominees for ICO's Board of Directors selected by the then
incumbent members of the Board of Directors of ICO (the "Nominated Slate") and
the Wedco Shareholders who are parties to the Shareholders Agreement granted
substantially identical proxies to SAP and AOP to vote their shares of Common
Stock of ICO also in favor of the Nominated Slate.

                                      -26-

<PAGE>   27

     The Shareholders Agreement also provides that with respect to Wedco, SAP
will be its President and Chief Executive Officer and AOP will be its Chairman
of the Board and Chief Operating Officer.  Pursuant to the Shareholders
Agreement, Wedco's Articles of Incorporation were amended to provide that the
Chairman of the Board, President, CEO, COO or any person who shall hold any
other office, position or title having similar functions or authority to the
functions of the Chairman of the Board, President, CEO or COO or who shall have
equivalent operating authority of Wedco will be elected by a unanimous vote of
the Wedco Board of Directors.

     The Shareholders Agreement also provides that if one or more of the ICO
Shareholders or Wedco Shareholders who are parties to the agreement desire to
sell 500,000 or more shares of ICO Common Stock, other than in connection with
an underwritten public offering that would not result in a transfer or
transfers of 500,000 or more shares of ICO Common Stock to any person or group
of persons, such proposed sale shall not be effective unless the proposed
transferee agrees to be bound as the successor to the transferor under the
agreement.

     2.     REGISTRATION RIGHTS AGREEMENT.  ICO and the Wedco Shareholders are
parties to a Registration Rights Agreement to provide the Wedco Shareholders,
for a period of five years after April 30, 1996 with certain demand and
"piggyback" registration rights to enable them to dispose of the shares of
Common Stock of ICO received by them in the Merger.

            Other than as listed above, none of the Reporting Persons is a
party to any agreement with respect to any securities of ICO, including
agreements with respect to the transfer or voting of any such securities,
finder's fees, joint ventures, loans or option arrangements, puts or calls,
guarantees of profits, division of profits or loss, or the giving or
withholding of proxies.

ITEM 7.     MATERIAL TO BE FILED AS EXHIBITS.

            1.   Agreement required pursuant to Regulation Section 240.13d-
1(f)(1) promulgated under the Securities exchange Act of 1934, as amended.

            2.   Powers of Attorney executed in connection with filings under 
the Securities Exchange Act of 1934, as amended.

            3.   Stockholders Agreement.*

            4.   Registration Rights Agreement.*

            5.   Merger Agreement among Wedco Technology, Inc., W Acquisition
Corp. and ICO, Inc. dated as of December 8, 1995, as Amended on March 13,
1996.*


            *Exhibits previously filed with the Securities and Exchange
Commission on Form S-4, Registration No. 333-00831 by ICO and incorporated
herein by reference.

                                      -27-

<PAGE>   28



          After reasonable inquiry and to the best knowledge and belief of the
undersigned, it is hereby certified that the information set forth in this
statement is true, complete and correct.

                                   /s/ DR. ASHER O. PACHOLDER
Dated:  May 10, 1996               _______________________________________
                                   Dr. Asher O. Pacholder, Individually and
                                   As Attorney-in-Fact for:

                                   Sylvia A. Pacholder
                                   Robin E. Pacholder
                                   William J. Morgan
                                   Pacholder Associates, Inc.
                                   P M Delaware, Inc.
                                   William E. Willoughby
                                   Peggy S. Willoughby
                                   William C. Willoughby
                                   Regina S. Willoughby
                                   Fred R. Feder
                                   Theo J.M.L. Verhoeff
                                   Catherine Willoughby Stephens
                                   Walter L. Leib

                                   /s/ EDWARD N. BAROL
                                   __________________________________________
                                   Edward N. Barol

359401.1


                                      -28-

<PAGE>   1




                                   EXHIBIT 1

                                   AGREEMENT
                                   ---------

        This Agreement ("Agreement") executed this ____ day of May, 1996 is by
and among DR. ASHER O. PACHOLDER ("AOP"), SYLVIA A. PACHOLDER ("SAP"), ROBIN
E. PACHOLDER ("REP"), WILLIAM J. MORGAN ("Morgan"), PACHOLDER ASSOCIATES, INC.,
an Ohio corporation ("Pacholder Associates"), P M DELAWARE, INC., a
Delaware corporation ("P M Delaware") (AOP,  REP, SAP, Morgan, Pacholder
Associates and P M Delaware are referred to herein collectively as the "ICO
Shareholders"), WILLIAM E. WILLOUGHBY ("WEW"), PEGGY S. WILLOUGHBY ("PSW"),
WILLIAM C. WILLOUGHBY ("WCW"), REGINA S. WILLOUGHBY ("RSW"), FRED R. FEDER
("Feder"), THEO J.M.L. VERHOEFF ("Verhoeff") and CATHERINE WILLOUGHBY STEPHENS
("CWS") (WEW, PSW, WCW, RSW, Feder, Verhoeff and CWS are referred to herein
collectively as the "Wedco Shareholders") (the ICO Shareholders and the Wedco
Shareholders are collectively the "Shareholders"), WALTER L. LEIB ("Leib") and
EDWARD N. BAROL ("Barol").

        WHEREAS, as of the date of this Agreement, the Shareholders own
approximately 39.9% of ICO, Inc., a Texas corporation;

        WHEREAS, the Shareholders entered into a Shareholders Agreement
regarding the voting of the ICO, Inc.  ("ICO") Common Stock, no par value (the
"ICO Common Stock");

        WHEREAS, the ICO Shareholders granted Leib and Barol  irrevocable
proxies coupled with an interest with respect to their shares of ICO Common
Stock;

        WHEREAS, the Shareholders, Leib and Barol may be deemed to be the
beneficial owners of ICO Common Stock pursuant to Regulation Section 240.13d-3
promulgated under the Securities Exchange Act of 1934, as amended;

        WHEREAS, the Shareholders, Leib and Barol from time to time must file
statements pursuant to certain sections of the Securities Exchange Act of 1934,
as amended, concerning the ownership of equity securities of  ICO, Inc.;

        NOW, THEREFORE, BE IT RESOLVED that the Shareholders, Leib and Barol do
hereby agree to file jointly with the Securities Exchange Commission any
schedules or other filings or amendments thereto made by or on behalf of the
Shareholders, Barol and Leib pursuant to Section 13(d) of the Securities
Exchange Act of 1934, as amended.


                               ______________________________________ 
                               DR. ASHER O. PACHOLDER

                               ____________________________________ 
                               SYLVIA A. PACHOLDER
<PAGE>   2

                               _____________________________________
                               ROBIN E. PACHOLDER

                               _________________________________
                               WILLIAM J. MORGAN

                               PACHOLDER ASSOCIATES, INC.


                               BY:________________________________

                               P M DELAWARE, INC.

                               BY:________________________________


                               _____________________________________
                               WILLIAM E. WILLOUGHBY

                               _____________________________________
                               PEGGY S. WILLOUGHBY

                               _____________________________________
                               WILLIAM C. WILLOUGHBY

                               _____________________________________
                               REGINA S. WILLOUGHBY

                               _____________________________________
                               FRED R. FEDER

                               ____________________________________
                               THEO J.M.L. VERHOEFF

                               _____________________________________
                               CATHERINE WILLOUGHBY STEPHENS

                               _____________________________________
                               WALTER L. LEIB

                               _____________________________________
                               EDWARD N. BAROL

<PAGE>   1




                                   EXHIBIT 2

                               POWER OF ATTORNEY
                               -----------------

        I, DR. ASHER O. PACHOLDER, do hereby appoint SYLVIA A. PACHOLDER as my
true and lawful attorney-in-fact to sign on my behalf individually and to file
with the Securities and Exchange Commission any schedules or other filings or
amendments thereto made by me pursuant to Section 13(d) of the Securities and
Exchange Act of 1934, as amended.

        IN WITNESS WHEREOF, I have hereunto set my hand this ____ day of May,
1996.




                               ____________________________________ 
                               DR. ASHER O. PACHOLDER





<PAGE>   2




                                   EXHIBIT 2

                               POWER OF ATTORNEY
                               -----------------


        I, SYLVIA A. PACHOLDER, do hereby appoint DR. ASHER O.  PACHOLDER as my
true and lawful attorney-in-fact to sign on my behalf individually and to file
with the Securities and Exchange Commission any schedules or other filings or
amendments thereto made by me pursuant to Section 13(d) of the Securities and
Exchange Act of 1934, as amended.

        IN WITNESS WHEREOF, I have hereunto set my hand this ____ day of May,
1996.




                               ____________________________________ 
                               SYLVIA A. PACHOLDER





<PAGE>   3




                                   EXHIBIT 2

                               POWER OF ATTORNEY
                               -----------------

        I, WILLIAM E. WILLOUGHBY, do hereby appoint DR. ASHER O. PACHOLDER and
SYLVIA A. PACHOLDER, or either of them, as my true and lawful attorneys-in-
fact to sign on my behalf individually and to file with the Securities and
Exchange Commission any schedules or other filings or amendments thereto made
by me pursuant to Section 13(d) of the Securities and Exchange Act of 1934, as
amended.

        IN WITNESS WHEREOF, I have hereunto set my hand this ____ day of May,
1996.




                               ____________________________________ 
                               WILLIAM E. WILLOUGHBY





<PAGE>   4




                                   EXHIBIT 2

                               POWER OF ATTORNEY
                               -----------------

        I, ROBIN E. PACHOLDER, do hereby appoint DR. ASHER O. PACHOLDER and
SYLVIA A. PACHOLDER, or either of them, as my true and lawful attorneys-in-
fact to sign on my behalf individually and as an officer of Pacholder
Associates, Inc. and to file with the Securities and Exchange Commission any
schedules or other filings or amendments thereto made by me pursuant to Section
13(d) of the Securities and Exchange Act of 1934, as amended.

        IN WITNESS WHEREOF, I have hereunto set my hand this ____ day of May,
1996.




                               ____________________________________ 
                               ROBIN E. PACHOLDER





<PAGE>   5




                                   EXHIBIT 2

                               POWER OF ATTORNEY
                               -----------------

        I, WILLIAM J. MORGAN, do hereby appoint DR. ASHER O. PACHOLDER and
SYLVIA  A. PACHOLDER, or either of them, as my true and lawful attorneys-in-
fact to sign on my behalf individually, as an officer and director of P M
Delaware, Inc. and an officer and director of Pacholder Associates, Inc. and to
file with the Securities and Exchange Commission any schedules or other filings
or amendments thereto made by me pursuant to Section 13(d) of the Securities
and Exchange Act of 1934, as amended.

        IN WITNESS WHEREOF, I have hereunto set my hand this ____ day of May,
1996.




                               ____________________________________ 
                               WILLIAM J. MORGAN




<PAGE>   6




                                   EXHIBIT 2

                               POWER OF ATTORNEY
                               -----------------


        I, PEGGY S. WILLOUGHBY, do hereby appoint DR. ASHER O. PACHOLDER and
SYLVIA A. PACHOLDER, or either of them, as my true and lawful attorneys-in-
fact to sign on my behalf individually and to file with the Securities and
Exchange Commission any schedules or other filings or amendments thereto made
by me pursuant to Section 13(d) of the Securities and Exchange Act of 1934, as
amended.

        IN WITNESS WHEREOF, I have hereunto set my hand this ____ day of May,
1996.




                               ____________________________________ 
                               PEGGY S. WILLOUGHBY





<PAGE>   7




                                   EXHIBIT 2

                               POWER OF ATTORNEY
                               -----------------

        I, WILLIAM C. WILLOUGHBY, do hereby appoint DR. ASHER O. PACHOLDER and
SYLVIA A. PACHOLDER, or either of them, as my true and lawful attorneys-in-
fact to sign on my behalf individually and to file with the Securities and
Exchange Commission any schedules or other filings or amendments thereto made
by me pursuant to Section 13(d) of the Securities and Exchange Act of 1934, as
amended.

        IN WITNESS WHEREOF, I have hereunto set my hand this ____ day of May,
1996.




                               ____________________________________ 
                               WILLIAM C. WILLOUGHBY





<PAGE>   8




                                   EXHIBIT 2

                               POWER OF ATTORNEY
                               -----------------

        I, REGINA S. WILLOUGHBY, do hereby appoint DR. ASHER O. PACHOLDER and
SYLVIA A. PACHOLDER, or either of them, as my true and lawful attorneys-in-
fact to sign on my behalf individually and to file with the Securities and
Exchange Commission any schedules or other filings or amendments thereto made
by me pursuant to Section 13(d) of the Securities and Exchange Act of 1934, as
amended.

        IN WITNESS WHEREOF, I have hereunto set my hand this ____ day of May,
1996.




                               ____________________________________ 
                               REGINA S. WILLOUGHBY


<PAGE>   9




                                   EXHIBIT 2

                               POWER OF ATTORNEY
                               -----------------

        I, FRED R. FEDER, do hereby appoint DR. ASHER O. PACHOLDER and SYLVIA
A. PACHOLDER, or either of them, as my true and lawful attorneys-in-fact to
sign on my behalf individually and to file with the Securities and Exchange
Commission any schedules or other filings or amendments thereto made by me
pursuant to Section 13(d) of the Securities and Exchange Act of 1934, as
amended.

        IN WITNESS WHEREOF, I have hereunto set my hand this ____ day of May,
1996.




                               ____________________________________ 
                               FRED R. FEDER

<PAGE>   10




                                   EXHIBIT 2

                               POWER OF ATTORNEY
                               -----------------

        I, THEO J.M.L. VERHOEFF, do hereby appoint DR. ASHER O. PACHOLDER and
SYLVIA A. PACHOLDER, or either of them, as my true and lawful attorneys-in-
fact to sign on my behalf individually and to file with the Securities and
Exchange Commission any schedules or other filings or amendments thereto made
by me pursuant to Section 13(d) of the Securities and Exchange Act of 1934, as
amended.

        IN WITNESS WHEREOF, I have hereunto set my hand this ____ day of May,
1996.




                               ____________________________________ 
                               THEO J.M.L. VERHOEFF

<PAGE>   11




                                   EXHIBIT 2

                               POWER OF ATTORNEY
                               -----------------

        I, CATHERINE WILLOUGHBY STEPHENS, do hereby appoint DR. ASHER O. 
PACHOLDER and SYLVIA A. PACHOLDER, or either of them, as my true and lawful
attorneys-in-fact to sign on my behalf individually and to file with the
Securities and Exchange Commission any schedules or other filings or amendments
thereto made by me pursuant to Section 13(d) of the Securities and Exchange Act
of 1934, as amended.

        IN WITNESS WHEREOF, I have hereunto set my hand this ____ day of May,
1996.




                               ____________________________________ 
                               CATHERINE WILLOUGHBY STEPHENS

<PAGE>   12




                                   EXHIBIT 2

                               POWER OF ATTORNEY
                               -----------------

        I, WALTER L. LEIB, do hereby appoint DR. ASHER O. PACHOLDER and SYLVIA
A. PACHOLDER, or either of them, as my true and lawful attorneys-in-fact to
sign on my behalf individually and to file with the Securities and Exchange
Commission any schedules or other filings or amendments thereto made by me
pursuant to Section 13(d) of the Securities and Exchange Act of 1934, as
amended.

        IN WITNESS WHEREOF, I have hereunto set my hand this ____ day of May,
1996.




                               ____________________________________ 
                               WALTER L. LEIB




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