SC 13G/A 1 t23663-3.txt SCHEDULE 13G/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No.9)* MOCON (Name of Issuer) COMMON STOCK (Title of Class of Securities) 607494101 (CUSIP Number) *The remainder of this cover 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 subsquenent 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). 1. NAME OF REPORTING PERSON S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON FENIMORE ASSET MANAGEMENT, INC. 14-1564237 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) Joint filing pursuant to Rule 13d-1 (f) (1) See Item 2 (b) X 3. SEC USE ONLY 4. CITIZENSHIP OR PLACE OF ORGANIZATION INCORPORATED IN NEW YORK STATE NUMBER OF 5. SOLE VOTING POWER - SHARES BENEFICIALLY 6. SHARED VOTING POWER 434,299 OWNED BY EACH 7. SOLE DISPOSITIVE POWER - REPORTING PERSON WITH 8. SHARED DISPOSITIVE POWER 434,299 9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 434,299 10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* N/A 11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 7.95% 12. TYPE OF REPORTING PERSON* IA CUSIP No. 607494101 13G Page 2 of 4 Pages 1. NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY) Thomas O. Putnam 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) Joint filing pursuant to Rule 13d-1 (f) (1) See Item 2 (b) X 3. SEC USE ONLY 4. CITIZENSHIP OR PLACE OF ORGANIZATION INCORPORATED IN NEW YORK STATE NUMBER OF 5. SOLE VOTING POWER - SHARES BENEFICIALLY 6. SHARED VOTING POWER 434,299 OWNED BY EACH 7. SOLE DISPOSITIVE POWER - REPORTING PERSON WITH 8. SHARED DISPOSITIVE POWER 434,299 9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 434,299 10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* N/A 11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 7.95% 12. TYPE OF REPORTING PERSON* IN Cusip No. 607556107 13G Page 3 of 4 Pages Schedule 13G Additional Information Item # 1. (a) Name of Issuer: MOCON (b) Address of Issuer's Principal Executive Offices: 7500 Boone Avenue North Minneapolis, MN 55428 2. (a) Name of Person Filing: FENIMORE ASSET MANAGEMENT, INC. (b) Address of Principal Business Office for Each of the Above: 384 N. Grand Street, Box 310 Cobleskill, NY 12043 (c) Citizenship: INCORPORATED IN THE STATE OF NEW YORK (d) Title of Class of Securities: COMMON STOCK (e) CUSIP Number: 607556107 3. This statement is filed pursuant to Rule 13d-1(b), or 13d-2(b). The person filing is a: (a) [ ] Broker or Dealer registered under Section 15 of the Act (b) [ ] Bank as defined in section 3(a)(6) of the Act (c) [ ] Insurance Company as defined in section 3(a)(19) of the Act (d) [ ] Investment Company registered under section 8 of the Investment Company Act (e) [x] Investment Adviser registered under section 203 of the Investment Advisers Act of 1940 (f) [ ] Employee Benefit Plan, Pension Fund which is subject to the provsions of the Employee Retirement Income Security Act of 1974 or Endowment Fund (g) [ ] Parent Holding Company, in accordance with 240.13d-1(b)(ii)(G) (Note: See Item 7) (h) [ ] Group, in accordance with 240.13d-1(b)(1)(ii)(H) 4. Ownership: (a) Amount Beneficially Owned: 434,299 (b) Percent of Class: 7.95% (c) Number of shares as to which such person has: (i) sole power to vote or to direct the vote - (ii) shared power to vote or to direct the vote 434,299 (iii) sole power to dispose or to direct the disposition of - (iv) shared power to dispose or to direct the disposition of 434,299 5. Ownership of Five Percent or Less of a Class: N/A CUSIP NO. 607556107 13G Page 4 of 4 Pages Schedule 13G Additional Information (continued) Item # 6. Ownership of More than Five Percent on Behalf of Another Person: N/A 7. Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company: N/A 8. Identification and Classification of Members of the Group: N/A 9. Notice of Dissolution of Group: N/A 10. Certification: By signing below, the undersigned certify that, to the best of their knowledge and belief, the securities referred to above were acquired in the ordinary course of business and were not acquired for the purpose of and do not have the effect of changing or influencing the control of the issuer of such securities and were not acquired in connection with or as a participant in any transaction having such purpose or effect. After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. Date: January 28, 2002 Date: January 28, 2002 Signature: By /s/ Joseph A. Bucci Signature: By:/s/Thomas O. Putnam ------------------- ------------------- JOSEPH A. BUCCI THOMAS O. PUTNAM SECRETARY AND COMPLIANCE OFFICER FENIMORE ASSET MANAGEMENT, INC.