------------------------------- / OMB APPROVAL / ------------------------------- / OMB Number: 3235-0145 / / Expires: August 31, 1991 / / 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. 12)* Calgon Carbon Corporation -------------------------------------------------------------------------------- (Name of Issuer) Common Stock, par value $.01 per share -------------------------------------------------------------------------------- (Title of Class of Securities) 129603 10 6 ------------------------------ (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). Page 1 of 5 pages ------------------------ ------------------------- CUSIP No. 129603 10 13G Page 2 of 5 Pages ------------ --- --- ------------------------ ------------------------- ------------------------------------------------------------------------------ NAME OF REPORTING PERSON 1. S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON Thomas A. McConomy ------------------------------------------------------------------------------ CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* 2. (a) [_] (b) [_] ------------------------------------------------------------------------------ SEC USE ONLY 3. ------------------------------------------------------------------------------ CITIZENSHIP OR PLACE OF ORGANIZATION 4. ------------------------------------------------------------------------------ SOLE VOTING POWER 5. NUMBER OF 4,354,375 SHARES ----------------------------------------------------------- SHARED VOTING POWER BENEFICIALLY 6. OWNED BY ----------------------------------------------------------- EACH SOLE DISPOSITIVE POWER 7. REPORTING 4,354,375 PERSON ----------------------------------------------------------- SHARED DISPOSITIVE POWER WITH 8. ------------------------------------------------------------------------------ AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 9. 4,354,375 ------------------------------------------------------------------------------ CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* 10. [_] ------------------------------------------------------------------------------ PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 11. 11.2% ------------------------------------------------------------------------------ TYPE OF REPORTING PERSON* 12. ------------------------------------------------------------------------------ * SEE INSTRUCTIONS BEFORE FILLING OUT! 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 if: 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 Field 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, 2001, Thomas A. McConomy beneficially owned 4,354,375 shares of Common Stock, of which 32,350 shares are those which he has a right to acquire pursuant to options granted under the Company' 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, 2001, Mr. McConomy beneficially owned 11.2% of the shares of Common Stock. b) On December 31, 2001, Mr. McConomy had the sole power to vote and dispose or direct the disposition of the 4,354,375 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 13, 2002 /s/ Thomas A. McConomy ---------- ---------------------- Thomas A. McConomy Page 5 of 5