SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 Amendment No.: 2 * Name of Issuer: Aceto Corporation Title of Class of Securities: Common Stock, $.01 par value CUSIP Number: 004446100 Date of Event Which Requires Filing of this Statement: December 19, 2002 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 the disclosures provide 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. CUSIP Number: 004446100 1. Name of Reporting Persons I.R.S. Identification No. of Above Persons Schweizerhall, Inc. 2. Check the appropriate Box if a Member of a Group a. X b. 3. SEC Use Only 4. Citizenship or Place of Organization New Jersey Number of Shares Beneficially Owned by Each Reporting Person With: 5. Sole Voting Power: 600,000 6. Shared Voting Power: 0 7. Sole Dispositive Power: 600,000 8. Shared Dispositive Power: 0 Cover-2 9. Aggregate Amount Beneficially Owned by Each Reporting Person 600,000 10. Check if the Aggregate Amount in Row (9) Excludes Certain Shares / / 11. Percent of Class Represented by Amount in Row (9) 9.19% 12. Type of Reporting Person CO Cover-3 CUSIP Number: 004446100 1. Name of Reporting Persons I.R.S. Identification No. of Above Persons Schweizerhall Holding AG 2. Check the appropriate Box if a Member of a Group a. X b. 3. SEC Use Only 4. Citizenship or Place of Organization Switzerland Number of Shares Beneficially Owned by Each Reporting Person With: 5. Sole Voting Power: 0 6. Shared Voting Power: 0 7. Sole Dispositive Power: 0 8. Shared Dispositive Power: 0 Cover-4 9. Aggregate Amount Beneficially Owned by Each Reporting Person 0 10. Check if the Aggregate Amount in Row (9) Excludes Certain Shares / / 11. Percent of Class Represented by Amount in Row (9) 0% 12. Type of Reporting Person CO Cover-5 Item 1 (a) Name of Issuer: Aceto Corporation (b) Address of Issuer's Principal Executive Offices: One Hollow Lane Lake Success, New York 11042 Item 2 (a)-(c) Name, Address of Principal Business office, and Citizenship of Persons Filing: Schweizerhall, Inc. c/o Nicholas L. Truglio, CPA Rosenberg, Rich, Baker, Berman & Company 380 Foothill Road PO Box 6483 Bridgewater, NJ 08807-0483 Place of organization - New Jersey Schweizerhall Holding AG CH-4013 Basel Switzerland Place of organization - Switzerland (d) Title of Class of Securities: Common Stock, $.01 par value (e) CUSIP Number: 004446100 Item 3. If this statement is filed pursuant to Rule 13d-1(b) (1) or 13d-2(b) or (c) check whether the person filing is: N/A If this statement is filed pursuant to Rule 13d-1(c), check this box. /X/ Item 4. Ownership. (a) Amount Beneficially Owned: Schweizerhall, Inc.: 600,000 shares (with sole power to vote and sole power to dispose of) Schweizerhall Holding AG: 0 shares (b) Percent of Class: Schweizerhall, Inc.: 9.19% Schweizerhall Holding AG: 0% Item 5. Ownership of Five Percent or Less of a Class. N/A Item 6. Ownership of More than Five Percent on Behalf of Another Person. N/A Item 7. Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person. N/A Item 8. Identification and Classification of Members of the Group. See Exhibit Attached. Item 9. Notice of Dissolution of Group. N/A Item 10. Certification for Rule 13d-1(c): By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held 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. Schweizerhall, Inc. By: /s/ Hans C. Noetzli --------------------------------------- Hans C. Noetzli, Chairman of the Board December 20, 2002 Schweizerhall Holding AG By: /s/ Dr. Hans Peter Schaer --------------------------------------- Dr. Hans Peter Schaer, Chairman of the Board By: /s/ Dr. Eugene Peter --------------------------------------- Dr. Eugene Peter, Vice President Agreement The undersigned agree that this Schedule 13G dated December 20, 2002 relating to the Common Stock of Aceto Corporation shall be filed on behalf of the undersigned. Schweizerhall, Inc. By: /s/ Hans C. Noetzli --------------------------------------- Hans C. Noetzli, Chairman of the Board Schweizerhall Holding AG By: /s/ Dr. Hans Peter Schaer --------------------------------------- Dr. Hans Peter Schaer, Chairman of the Board By: /s/ Dr. Eugene Peter --------------------------------------- Dr. Eugene Peter, Vice President