SEC POTENTIAL PERSONS WHO ARE TO RESPOND TO THE COLLECTION OF 1745 INFORMATION CONTAINED IN THIS FORMARE NOT REQUIRED TO (6/ RESPOND UNLESS THE FORM DISPLAYS ACURRENTLY VALID OMB 01) CONTROL NUMBER. OMB APPROVAL Exp OMB Number: 3235-0145 Expires: December 31, 2005 Estimated average burden Hours per response... 11 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. )* HUDSON TECHNOLOGIES., INC. (Name of Issuer) COMMON STOCK. $.01 PAR VALUE (Title of Class of Securities) 444144-10-9 (CUSIP Number) December 19, 2003 (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) |x| 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 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) CUSIP No. 444144-10-9 1. NAMES OF REPORTING PERSONS. Frederick T. Zugibe, Sr. I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS) (A) |_| (B) |x| 3. SEC USE ONLY 4. CITIZENSHIP OR PLACE OF ORGANIZATION United States 5. SOLE VOTING POWER 362,132 Number of Shares 6. SHARED VOTING POWER Beneficially 182,000 owned by Each 7. SOLE DISPOSITIVE POWER Reporting 362,132 Person With 8. SHARED DISPOSITIVE POWER 182,000 9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 531,298 in the aggregate 10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS) 11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 6.0 % 12. TYPE OF REPORTING PERSON (SEE INSTRUCTIONS) IN SCHEDULE 13G Item 1(a). Name of Issuer: Hudson Technologies, Inc. Item 1(b). Address of Issuer's Principal Executive Offices: 275 North Middletown Road Pearl River, New York 10965 Item 2(a). Name of Person Filing: Frederick T. Zugibe, Sr. Item 2(b). Address of Principal Business Office or, If None, Residence: One Angelus Drive, Garnerville, New York 10923 Item 2(c). Citizenship: Reporting person is a United States citizen. Item 2(d). Title of Class of Securities: Common Stock, par value $.01 per share. (includes 12,834 common stock purchase warrants) Item 2(e). CUSIP Number: 444144-10-9 Item 3. Type of Reporting Person: Item 4. Ownership: (a) Amount Beneficially Owned: As of December 19, 2003, Frederick T. Zugibe, Sr. beneficially owned 531,298 shares of common stock of Hudson Technologies, Inc. (the "Company"), which amount includes 362,132 shares owned by Frederick T. Zugibe, Sr. and 182,000 shares owned by Frederick T. Zugibe, Sr. and his Wife (b) Percentage of Class: 6.0 % beneficially owned by Frederick T. Zugibe. Calculation of percentage of beneficial ownership is based on 8,999,626 shares of the Issuer's Common Stock outstanding on December 19, 2003 following completion of the Issuer's public offering. (c) Number of Shares as to Which Such Person Has: (i) sole power to vote or direct the vote: 362,132 shares of Common Stock (ii) shared power to vote or direct the vote: 182,000 shares of Common Stock (iii) sole power to dispose or direct the disposition of: 362,132 shares of Common Stock (iv) shared power to dispose or direct the disposition of: 182,000 shares of Common stock Items 5-9. Not applicable. Item 10. Certification: By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect. SIGNATURE After reasonable inquiry and to the best of the undersigned's knowledge and belief, the undersigned certifies that the information set forth in this statement is true, complete and correct. March 2, 2004 Date /s/ Frederick T. Zugibe, Sr. Signature Frederick T. Zugibe, Sr. Name/Title