Form 13G/A
OMB APPROVAL
OMB Number:
   
3235-0145
Expires:
   
December 31, 2005
Estimated average burden
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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
 
 
 
SCHEDULE 13G
 
 
Under the Securities Exchange Act of 1934
(Amendment No. 13)*
 
 
 
 
Calgon Carbon Corporation
(Name of Issuer)
 
 
Common Stock, par value $0.01 per share
(Title of Class of Securities)
 
 
129603 10 6
                                (CUSIP Number)                                
 
 
(Date of Event Which Requires Filing of this Statement)
 
 
Check the appropriate box to designate the rule pursuant to which this Schedule is filed:
 
¨ Rule 13d-1(b)
 
¨ Rule 13d-1(c)
 
¨ Rule 13d-1(d)
 
 
*
 
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).
 
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.
 
Page 1 of 5 pages

CUSIP No. 129603 10
 
  1.

  
Names of Reporting Persons.
I.R.S. Identification Nos. of above persons (entities only).
 
    Thomas A. McConomy        
    
  2.
  
Check the Appropriate Box if a Member of a Group (See Instructions)
(a)  ¨
(b)  ¨
    
  3.

  
SEC Use Only
 
    
  4.

  
Citizenship or Place of Organization
 
    
NUMBER OF
SHARES
BENEFICIALLY
OWNED BY
EACH
REPORTING
PERSON
WITH
  
  5.    Sole Voting Power                4,259,615
 
  6.    Shared Voting Power            
 
  7.    Sole Dispositive Power         4,259,615
 
  8.    Shared Dispositive Power
 
  9.

  
Aggregate Amount Beneficially Owned by Each Reporting Person            4,259,615
 
    
10.

  
Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)
 
¨
    
11.

  
Percent of Class Represented by Amount in Row (9)                                    10.9%
 
    
12.

  
Type of Reporting Person (See Instructions)
 
    
 
Page 2 of 5 pages

Item 1(a).    Name of Issuer
 
Calgon Carbon Corporation (the “Company”)
 
Item 1(b).    Address of Issuer’s Principal Executive Offices
 
P.O. Box 717
Pittsburgh, PA 15230-0717
 
Item 2(a).    Name of Person Filing
 
Thomas A. McConomy
 
Item 2(b).    Address of Principal Business Office, or if None, Residence
 
The principal business address of the undersigned is:
 
413 Woodland Road
Sewickley, PA 15143
 
Item 2(c).    Citizenship
 
United States of America
 
Item 2(d).    Title of Class of Securities
 
Common Stock, $.01 par value (the “Common Stock”)
 
Item 2(e).    CUSIP No.
 
129603 10 6
 
Item 3.         Statement Filed Pursuant to Rule 13d-1(b) or Rule 13d-2(b)
 
None of the categories is applicable to the undersigned.
 
Item 4.         Ownership
 
a)    Amount Beneficially Owned.
 
As calculated under Rule 13d-3, as of December 31, 2002, Thomas A. McConomy beneficially owned 4,259,615 shares of Common Stock, of which 41,150 shares are those which he has a right to acquire pursuant to options granted under the Company’s 1993 Non-Employee Directors’ Stock Option Plan, as amended.
 

Page 3 of 5

b) Percent of Class.
 
As calculated under Rule 13d-3, as of December 31, 2002, Mr. McConomy beneficially owned 10.9% of the shares of Common Stock.
 
c) On December 31, 2002, Mr. McConomy had the sole power to vote and dispose or direct the disposition of the 4,259,615 shares of Common Stock then owned by him.
 
Item 5.    Ownership of Five Percent or Less of a Class
 
Inapplicable
 
Item 6.    Ownership of More Than Five Percent on Behalf of Another Person
 
None
 
Item 7.    Identification and Classification of the Subsidiary Which Acquired the  Security Being Reported on by the Parent Holding Company
 
Inapplicable
 
Item 8.    Identification and Classification of Members of the Group
 
Inapplicable
 
Item 9.    Notice of Dissolution of Group
 
Inapplicable
 
Item 10.  Certification
 
Inapplicable

Page 4 of 5

SIGNATURE
 
After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement with respect to me is true, complete and correct.
 
Dated: January 15, 2003
   
/s/ Thomas A. McConomy
Thomas A. McConomy

Page 5 of 5