SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D (Rule 13d-101) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULE 13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO RULE 13d-2(a) (Amendment No. ) ( ) Minntech Corporation -------------------------------------------------------------------------------- (Name of Issuer) Common Stock -------------------------------------------------------------------------------- (Title of Class of Securities) 604258103 -------------------------------------------------------------------------------- (CUSIP Number) Allen B. Holeman, Bear, Stearns & Co. Inc. 115 South Jefferson Road, Whippany, NJ 07981 (973) 793-2202 -------------------------------------------------------------------------------- (Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications) August 9, 2001 -------------------------------------------------------------------------------- (Date of Event which Requires Filing of This Statement) If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of Rule 13d-1(e), 13d-1(f) or 13d-1(g), check the following box [_]. Note: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See Rule 13d-7(b) for other parties to whom copies are to be sent. (Continued on following pages) (Page 1 of Pages) ---------- (1) 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 on 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 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). (SC13D-07/98) CUSIP No. 604258103 13D Page of Pages ________________________________________________________________________________ 1 NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) The Bear Stearns Companies Inc.** IRS # 13-3286161 ________________________________________________________________________________ 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [_] ________________________________________________________________________________ 3 SEC USE ONLY ________________________________________________________________________________ 4 SOURCE OF FUNDS* WC, OO ________________________________________________________________________________ 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [_] ________________________________________________________________________________ 6 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware ________________________________________________________________________________ 7 SOLE VOTING POWER NUMBER OF 0 SHARES _________________________________________________________________ 8 SHARED VOTING POWER BENEFICIALLY OWNED BY 401,101 _________________________________________________________________ EACH 9 SOLE DISPOSITIVE POWER REPORTING 0 PERSON _________________________________________________________________ 10 SHARED DISPOSITIVE POWER WITH 401,101 ________________________________________________________________________________ 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 401,101 ________________________________________________________________________________ 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* [_] ________________________________________________________________________________ 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 6.00% ________________________________________________________________________________ 14 TYPE OF REPORTING PERSON* HC ________________________________________________________________________________ *SEE INSTRUCTIONS BEFORE FILLING OUT! 1 NAME OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Bear, Stearns & Co. Inc.** IRS # 13-3299429 ________________________________________________________________________________ 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [_] (b) [_] ________________________________________________________________________________ 3 SEC USE ONLY ________________________________________________________________________________ 4 SOURCE OF FUNDS* WC, OO ________________________________________________________________________________ 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [_] ________________________________________________________________________________ 6 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware ________________________________________________________________________________ 7 SOLE VOTING POWER NUMBER OF 0 SHARES _________________________________________________________________ 8 SHARED VOTING POWER BENEFICIALLY OWNED BY 401,101 _________________________________________________________________ EACH 9 SOLE DISPOSITIVE POWER REPORTING 0 PERSON _________________________________________________________________ 10 SHARED DISPOSITIVE POWER WITH 401,101 ________________________________________________________________________________ 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 401,101 ________________________________________________________________________________ 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* [_] ________________________________________________________________________________ 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 6.00% ________________________________________________________________________________ 14 TYPE OF REPORTING PERSON* BD ________________________________________________________________________________ *SEE INSTRUCTIONS BEFORE FILLING OUT! CUSIP No. 604258103 13D Page of Pages ________________________________________________________________________________ Item 1. Security and Issuer. Common Stock Minntech Corporation 14605 28th Avenue North Minneapolis, MN 55447 ________________________________________________________________________________ Item 2. Identity and Background. (a)Name: Bear, Stearns & Co. Inc. ("Bear Stearns") (b)Place of Organization: Delaware (c)(i)Principal Business: Securities Broker/Dealer (ii) Address: 245 Park Avenue New York, NY 10167 (d)None (e)See Appendix II (f)See Appendix I ________________________________________________________________________________ Item 3. Source and Amount of Funds or Other Consideration. The aggregate purchase price of the 401,101 shares of Common Stock was approximately $4,011,010.00. ________________________________________________________________________________ Item 4. Purpose of Transaction. Bear Stearns has acquired the Common Stock of Minntech Corporation in the ordinary course of its business as a broker/dealer in connection with its trading and investment activities. Bear Stearns may acquire additional securities of the Issuer or dispose of securities of the Issuer in connection with such trading and investment activities. Although the foregoing represents the range of activities presently contemplated by Bear Stearns with respect to the Issuer, it should be noted that the possible activities of Bear Stearns are subject to change at any time. Except as set forth above, Bear Stearns has no present plans or intentions which relate to or would result in any of the actions described in subparagraph (a) through (j) of item 4 of Schedule 13D. ________________________________________________________________________________ Item 5. Interest in Securities of the Issuer as of 8/9/2001. (a)Number: 401,101 Percentage: 6.00% (b)1.Sole power to vote or to direct the vote: 0 2.Shared power to vote or to direct the vote: 401,101 3.Sole power to dispose or to direct the disposition: 0 4.Shared power to dispose or to direct the disposition: 401,101 (c)Information concerning transactions in the common stock effected by Bear Stearns is set forth on Appendix III hereto. (d)Inapplicable. (e)Inapplicable. ________________________________________________________________________________ Item 6. Contracts, Arrangements, Understandings or Relationships with Respect to Securities of the Issuer. None ________________________________________________________________________________ Item 7. Material to be Filed as Exhibits. None ________________________________________________________________________________ **Bear Stearns & Co. is a subsidiary of The Bear Stearns Companies Inc. 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. August 17, 2001 ---------------------------------------- (Date) /S/ ---------------------------------------- (Signature) Barry J. Cohen/Senior Managing Director ---------------------------------------- (Name/Title) APPENDIX I DIRECTORS AND EXECUTIVE OFFICERS OF BEAR, STEARNS & CO. INC. Name Principal Occupation or Employment James E. Cayne Chairman of the Board/Chief Executive Officer Chairman of the Management and Compensation Committee Alan D. Schwartz President and Co-Chief Operating Officer Warren J. Spector President and Co-Chief Operating Officer Alan C. Greenberg Chairman of the Executive Committee Bruce E. Geismar Chief Operations Officer Mark E. Lehman Executive Vice President/General Counsel Chief Legal Officer Michael Minikes Treasurer Samuel L. Molinaro Jr. Chief Financial Officer/Senior Vice President-Finance E. John Rosenwald Jr. Vice-Chairman of the Board Michael L. Tarnopol Vice-Chairman of the Board Kenneth L. Edlow Secretary Denis A. Bovin Director Peter D. Cherasia Director Ralph R. Cioffi Director Barry J. Cohen Director Wendy L. de Monchaux Director Daniel L. Keating Director John L. Knight Director David A. Liebowitz Director Richard R. Lindsey Director Bruce M. Lisman Director Roland N. Livney Director Jeffrey Mayer Director Fares D. Noujaim Director Craig M. Overlander Director Stephen E. Raphael Director Robert M. Steinberg Director Donald W. Tang Director Michael J. Urfirer Director Eli Wachtel Director Uzi Zucker Director John L. Knight's business address is One Canada Square London E16 5AD England. All other Directors and Executive Officers are citizens of the United States and their business address is 245 Park Avenue, New York, New York 10167. Bear Stearns & Co. Inc. is a wholly-owned subsidiary of the Bear Stearns Companies Inc. and of the persons named, all but John L. Knight hold similar office in the parent company. APPENDIX II Minntech Corporation Trading from 06/11/01 through 08/09/2001 (Various Firm's Accounts) ***** 08/09 ***** 37,500 MINNTECH CORP 10.2376 383,910.00 20,200 MINNTECH CORP 10.2376 206,799.52 17,300 MINNTECH CORP 10.2376 177,110.48 ***** 08/06 ***** 6,400 MINNTECH CORP 10.2392 65,530.88 3,400 MINNTECH CORP 10.2392 34,813.28 2,900 MINNTECH CORP 10.2392 29,693.68 ***** 07/31 ***** 1,000 MINNTECH CORP 10.1400 10,140.00 ***** 07/17 ***** 26,000 MINNTECH CORP 9.9974 259,932.40 13,500 MINNTECH CORP 9.9974 134,964.90 10,500 MINNTECH CORP 9.9974 104,972.70 ***** 07/16 ***** 41,000 MINNTECH CORP 9.9572 408,245.20 20,400 MINNTECH CORP 9.9572 203,126.88 16,900 MINNTECH CORP 9.9572 168,276.68 ***** 06/12 ***** 4,100 MINNTECH CORP 10.0200 41,082.00 Attention. Intentional misstatements or omissions of fact constitute federal criminal violations (see 18 U.S.C. 1001).